01 December 2005

NY Sues over Invasive Pests

Asian longhorned beetles (Anoplophora glabripennis)

The states of New York, California, Connecticut and Illinois are suing the U.S. Department of Agriculture (USDA) for failing to impose effective controls against destructive insects that enter the country in shipping pallets and other wooden packaging.

Invasive insect pests - - such as the Asian long-horned beetle (Anoplophora glabripennis), emerald ash borer (Agrilus planipennis), and pine shoot beetle (Tomicus piniperda) - enter the country in wooden pallets and other packaging made from raw wood. These pests have caused significant damage to trees in New York City, Long Island, Chicago and other communities. Thousands of trees have been destroyed in an effort to prevent the spread of these pests, which have few local predators or diseases to kill them. If these destructive insects spread from U.S. ports of entry into the nation's forests, they could further damage the timber, tree nursery, fruit orchard, maple syrup, and tourism industries.

Read more on the lawsuit

More information on the Asian long-horned beetle, emerald ash borer, and pine shoot beetle

18 November 2005

Darwin in NYC

The exhibition is billed as the "broadest and most complete collection ever assembled of specimens, artifacts, original manuscripts and memorabilia related to Darwin."

On view until May 29, Darwin exhibit at the American Museum of Natural History

04 November 2005

Now showing in Alaska


When talking about purple loosestrife (Lythrum salicaria), the noxious "purple menace" invader from Europe, its distribution in the United States is always mentioned. "Found in the continental U.S." or "in 48 states". Make that 49 - now appearing in Alaska as well. There are no safe harbors.

31 October 2005

Happy Halloween!

Doll's eyes (Actaea pachypoda {syn. A. alba}) MMMWAH!

Creepy, isn't it? The infructescence of doll's eyes makes an impression on you - wandering in a dark wood in fall, suddenly, it feels as though there are eyes on you. You look down, and it's true!

In late spring, when this member of the buttercup family (Ranunculaceae) is in flower, it would be easy to overlook, with it's small, white, star-like blooms held aloft sharply toothed, compound leaves. At this stage, it closely resembles its congener, red baneberry (Actaea rubra). But the real fun comes later in the season, when stark white berries with dark "eye" spots appear in early fall. (This spot is a persistent stigma from the flower). These berries are collected on a grape-colored stem, which makes quite a striking contrast that lasts over a month. And as tempting as it may be, don't eat them - they are poisonous.

In New York State, doll's eyes is considered "exploitably vulnerable", which means people poach it in the wild. If you come across it, for goodness sakes, don't pick it!

However, it would be easy to enjoy this plant at home - it makes an excellent addition to any garden in partial shade. Growing to 2.5 ft tall, both baneberries are long-lived and willingly germinate from seed.

24 October 2005

I've been knotty



Just in time for the holidays!

The place to buy mugs, clocks, and other gear for your favorite invasive plant hater...is here What stone cold heart can resist a knotweed-hating teddy bear?

19 October 2005

HGG: Witch Hazel


In another installment Home Grown Greenery we take a look at witch hazel (Hamamelis virginiana). Witch-hazel has a number of traits that help it steal the limelight, including smooth grey bark, attractive architecture, and colorful fall foliage. But the real show stopper comes when you least expect it. As November approaches and most respectable plants have dropped their leaves and gone to seed, Hamamelis virginiana bursts forth in floristic splendor. Clusters of small pale yellow blooms, each with four streamer-like petals, hug the twigs. Some flowers may linger on the branches into December.

In the wild, Hamamelis virginiana is a common shrub of North America’s eastern deciduous forest, making it an easy plant to get to know during a casual walk in the woods.

Slow growing and multistemmed, witch-hazel typically reaches heights of 15 to 20 feet. The shrub has a full, rounded crown and an attractive vase-shaped habit. Its bark—thin, smooth, and gray—is quite attractive and adds interest to the winter garden. In the shade of canopy trees, witch-hazel exhibits zigzag branching and may look as though it were roaming for light, which it is. Its branching pattern and its leaves—which are held perpendicular to the sun—make it a good competitor for the limited light found in the understory.

The leaves themselves are decorative. Broadly oval with scalloped edges and inverted V-shaped venation, they grow up to six inches long and mature from deep green to a rich golden color in fall. Scientists have speculated that the leaves are a food source for larvae of an endangered moth, Acronicta hamamelis. One definite leaf eater is the witch-hazel leaf gall (Hormaphis hamamelidis). To house its eggs, this aphid chews through the leaf underside and secretes chemicals that lead to the formation of Hershey kisses-shaped galls.



Each individual witch-hazel blossom is functionally monoecious, meaning that it’s equipped with both sets of reproductive organs but acts as either a male (producing pollen only) or female (producing fruit only). Thus, any chance of self-fertilization is eliminated. Instead, the flowers use their showy petals and faint fragrance to attract pollinators to facilitate cross-fertilization. Small gnats and bees are the main pollinators, and they are rewarded for their labors with sugary nectar and sticky pollen.

Researchers suspect that the plant’s unusually late flowering period induces insects to pay extra special attention to the unique blossoms—after all, the flowers are the only game in town.

After pollination, actual fertilization of the seed is delayed until spring. The fruit develops during the regular growing season and is newly ripened as flowers begin to open in late autumn. The fruits develop into hard, fuzzy, tan-colored capsules, under an inch long, and they carry one or two dark shiny seeds. In fall, the capsules burst and eject their seeds up to 25 feet away, but they persist on the branches for a while, resembling baby birds, beaks agape, expecting a worm. If left undisturbed on the forest floor, the seeds will germinate two years after dispersal. In the interim, they might be eaten by songbirds or small mammals, or even the occasional bear.

The ideal garden setting for witch hazel is part sun to light shade with moist, slightly acidic, organically rich soils. While best flowering occurs in full sun, planting witch-hazel out in the open will subject it to scorching and burning. Balled-and-burlaped or container-grown specimens can be transplanted in spring or fall. As a landscaping element, individual plants are showy enough to stand on their own, but witch-hazel also works well when multiple specimens are grouped together.

More on Hamamelis virginiana

16 October 2005

New Invasive Plant Field Guide

Invasive Plants Field Guide: An ecological perspective of plant invaders of forests & woodlands.

A source for information on key plant invaders in eastern forests. The guide examines 15 main species in four plant categories and presents extensive information about each. There is also a references section. Full color photos appear throughout.

The publication is put out by USDA (#NA-TP-05-04). It can be downloaded here as a pdf.

14 October 2005

Will the real Aralia elata please stand up?

Japanese angelica tree (Aralia elata)??? Nice fall color, which I have never seen on (& reported doesn't exist for) the ubiquitous other Aralia.

Japanese angelica tree (Aralia elata)??? with infructescence

Devil's walking stick (Aralia spinosa)???

Welcome to the world of botanical taxonomy. For your entre, I thought we would go right for the jugular. Devil's walking stick (Aralia spinosa) is native to the U.S. Most literature cites its range as Delaware & south (e.g., Gleason & Cronquist). One (Mitchell & Tucker) says it's native to New York State. So I called our state botanist who assured me that G&C was right, it is not native to NY. In fact, field work has shown that there is no A. spinosa in the state at all. Everything we have been seeing is actually Aralia elata, an exotic invasive. There is a population of Aralia spinosa out on Long Island, but that was shown to have piggybacked in on nursery stock from North Carolina.

So when a colleague of mine called me to say he had found an interesting Aralia, I was excited. To compare, we began with the familiar.

We went to Highbridge Park in northern Manhattan. There was a small cluster of less than 10 shrubs in an opening in the forest canopy, not far off a trail. This is the Aralia shrub that I see all over NYC. It had dark green leaves held at almost a 90 degree angle to the main stem. We were calling this "spinosa" based on the leaves - veination (joined before margin) & finely toothed, no obvious pubescence. The fruit panicles no longer held berries & had already whithered, so we didn't take a sample.

Now, the fun part. Next we went to Fort Washington Park, a subset of Riverside Park in northern Manhattan (around 158 St.). There were maybe 5 shrubs scattered along a stretch between a trail & fencing for the Metro North train line (so not obviously colonial like above). These plants were new to me - I had never seen this species before. We were calling this "elata" based on the leaves - veination (run to margin), broadly toothed & obvious pubescence. Additionally, these leaves were lighter green & held at a more acute angle to the midstem.

So we sent the samples to Brooklyn Botanic Garden - I could barely get to sleep that night, I was so excited to hear back what the new-to-me plant was. Apparently they think they are both the same species...Aralia elata. They said what they really need is the point at which the inflorescence attaches to the main stem - that is the critical piece distinguishing one from the other. Oh. We didn't get that. But still, sometimes I think taxonomists are too by the book. Can't you just tell which is which? If I can ID species with just basal leaves, I expect a little more info when I provide such bounty.

And so the mystery continues..........
OK, OK, I know. Don't go by leaves. Flowers/fruits are more stable, & so the basis of taxonomic determinations. But c'mon - these have to be two different species. (And additionally, if you aren't supposed to look at leaves, then why the difference between Smilax herbacea & S. pulverulenta (NYS rare) - the former has no hair on it's leaves, the latter has hair. Be consistent, people!)

09 October 2005

Invasive willow threatens wetlands, rare plants in East


Egads - another one.

From The Boston Globe

A European invader has been sneaking onto the New England coast, infiltrating and undermining the natives.

The large gray willow, a shrub or small tree that spreads rapidly and closely resembles our native pussy willow, has been flying under the radar for years, colonizing the edges of ponds and crowding out rare plants and animals throughout the eastern United States. It was just identified this spring.

Other countries that have been invaded by the species, Salix cinerea, also called the European gray willow, paint a grim picture. New Zealand considers it a major "pest plant". Australia calls it the worst of the invasive willows and warns it can cross-pollinate with other willows.

There is concern about the threat to coastal plain ponds that are host to a whole complex of rare insects, animals and plants, including the Plymouth gentian, rose coreopsis, hyssop hedge-nettle and slender marsh pink, as well as rare dragonflies and damselflies.

The European willow's presence is confirmed for Cape Cod and Rhode Island. It is expected to show up in coastal areas stretching from Maine to Long Island. The Harvard Herbaria in Cambridge, Mass., has a specimen collected in Old Orchard Beach, Maine, in 1967, so the willow has a lengthy head start on efforts to control it. (Yet ANOTHER reason why herbaria are so important!!)

The full article from The Boston Globe

More on Salix cinerea

07 October 2005

Good Gardening: Medley


Solomon's seal (Polygonatum biflorum)
Solomon's seal, with it's tall, arching stems and showy foliage, is a statuesque addition to any shade garden. Once in the ground, they require very little attention.

Flowering dogwood (Cornus florida)
This is another example of why everyone should have a flowering dogwood...the rich fall foliage.

Evergreen woodfern (Dryopteris intermedia) and Sensitive fern (Onoclea sensibilis)
These ferns are attractive as border plantings in moist locations.

Mist flower (Eupatorium coelestinum)
Beloved by gardeners & butterflies alike, this easy-to-please member of the aster family (Asteraceae) is a rampant spreader, so give it lots of room.

29 September 2005

Botanists battle aliens in Acadia park

The plant busters, an elite team of national park botanists, had come to the Great Meadow on a whirlwind mission to search and destroy some of the alien, invasive species that have put down stubborn roots in the park.

"The more you look, the more you see," Betsy Lyman of the Northeast Exotic Plant Management Team said while pointing out an undulating green sea of alder buckthorn saplings. "It's an endless task."
The scrubby alder buckthorn saplings immigrated from Europe sometime after the 1800s, she said.

They spread rapidly and may be detrimental to the local wildlife in part because their large purple berries are attractive to birds but don't provide nearly the amount of nutrition that Maine's native berries, like the winterberry, do.

"For birds, it's kind of like eating junk food," Linda Gregory, Acadia National Park botanist, said. "This is not great wildlife food."

Read the full article from the Bangor Daily News

24 September 2005

Phrag in Iraq




With all of the bad news spewing forth from Iraq, I thought it might be time to post this. Phragmitis australis or "common reed" is one of the most invasive plant species in the northeast. Toiling diligently to destroy it, in this country restoration workers use mechanical & chemical means to squelch its vigor. Maybe we should take a page out of the Iraqi notebook. There, it is native & is used by Iraqis living in the northern marshes to build boats, housing, and temples. The temple in the photo below is said to be cool even at noon in the desert.







An article from NY Times in March on restoring the marshes of northern Iraq that were destroyed by Saddam Hussein.

More about Phragmites australis in the U.S.

22 September 2005

Stalking the Wild Orchid

Sadly, wild plant pilfering happens all the time. People can be stupifingly self-centered & just plain evil when it comes to rare vegetation - as chronicled famously in The Orchid Thief. But maybe too I am a little more trusting, I didn't ask the NY Times reporter to don a blindfold.

Here, garden writer Ken Druse takes a walk with the Nature Conservancy in the Pine Barrens of New Jersey...and I am jealous.Read more

19 September 2005

Guess what I found!

Somewhere in Van Cortlandt Park in the Bronx...

Schreber's aster (Eurybia schreberi {formerly Aster s.})
This native species has adapted to life on forest floors by being colonial. That is, it reproduces vegetatively, producing a leafy carpet. When it's happy, it will put up flowers, which are white. Easily confused with large-leaved aster (E. macrophylla), which has light blue blooms. But let's say you missed the boat on the flowers, as I did...what to do? Examine the basal leaves closely. Both species have heart-shaped bases. However, in E. schreberi, if you spread the bases, there is a rectangular shape between the lobes. Large-leaved is simply heart shaped. Obscure? You bet. That's why we botanists make the big bucks. It's important to differentiate between the two, since Schreber's aster is rare in New York State. Both species are uncommon in NYC.


Rough-leaved goldenrod (Solidago patula)
But that was just a teaser. I knew that plant was there. The "guess what I found" is this goldenrod. "They are a dime a dozen," you are thinking. Friend, you would be wrong.

Sure, Canada, early, gray, and rough-stemmed are common along roadsides and in old fields. Even seaside goldenrod isn't limited to its namesake habitat. But S. patula is one of the fabled "wetland goldenrods", which makes it unusual & rare in NYC. I had never seen it.

I found it quite by accident, as is the case with the best botanical finds. I knew it was a special goldenrod, and so marked the spot to return the next day. I came back armed with my Gleason & Cronquist and Britton & Brown. When it keyed out to S. patula, it felt as though I had just won a prize - a new find for the city!



14 September 2005

Good Gardening: Maidenhair Fern

Maidenhair fern (Adiantum pedatum). Note that even
ferns have some color to offer the garden palette come fall.


The lovely maidenhair fern (Adiantum pedatum) is a wonderful addition to a shady garden spot. Its delicate foliage whorled atop wiry black stems nicely complements broad-leaved wildflowers. The fern grows to 3 ft., producing spores in July-August, which is the best way to get new plants. It does reproduce vegetatively, but very slowly.

It's natural habitat is rich moist woods and streambanks, in circumneutral soil.
In your garden, this plant does best in well-drained, moist, organic soils - or a comparable situation that mimics its wild environs as much as possible. That said, it isn't terribly fussy. Its whispy demeanor belies its toughness - it can withstand variable situations as witnessed below in this front yard in Brooklyn.

12 September 2005

HGG: Beach Plum

Beach plum (Prunus maritima) in fruit

Time for another installment of "Home Grown Greenery". I am partial to beach plums, for a number of reasons. As the name implies, this shrub haunts seaside dunes, and who doesn't like the shore? Due to the salt spray, the shrub develops branching patterns that resembles sculptured hewn from dark bark. It eventually creates large, suckering colonies that may reach 6 ft. in height. In spring, before the leaves unfurl, the branches are awash in scented white blooms & ecstatic insects. It's quite a spectacle for a plant whose natural surroundings are so spartan. Each individual blossom has five petals & numerous stamens, as do all members of the rose family (Rosaceae). By fall, these develop into dark blue fleshy fruits that are edible, but you must be quick! Birds also like plums. (To guarantee fruit set, plant more than one shrub.)

Along with other Prunus species, beach plum is the preferred larval host plant for several species of swallowtail butterflies (Papilio), along with the coral hairstreak (Harkenclenus titus), viceroy admiral (Limenitis), and spring azure (Celastrina argiolus).

Black knot (Apiosporina morbosa) is common on Prunus species. It is more aesthetically displeasing than deadly to the plants. Here are excellent photographs & a perkier review of the fungal infection.

The species is endangered in Connecticut and Pennsylvania. More about beach plum.

30 August 2005

Nature's Revenge

Editorial from today's New York Times

The damage caused by a hurricane like Katrina is almost always called a natural disaster. But it is also unnatural, in the sense that much of it is self-inflicted. New Orleans is no exception, and while the city has been spared a direct hit from the storm, its politicians and planners must rethink the bad policies that contributed to the city's vulnerability.

An immediate priority is for the Senate to restore some $70 million that the House, in a singular act of poor timing, slashed from the Army Corps of Engineers' budget for the New Orleans district. The cuts could hurt the corps' ability to rebuild levees protecting the city. Meanwhile, the city itself must attend to a pumping system that is much in need of upgrading.

At the same time, there must also be an honest recognition of the fact that no amount of engineering - levees, sea walls, pumping systems, satellite tracking systems - can fully bring nature to heel. Indeed, the evidence is indisputable that systematic levee-building along the Mississippi upstream of New Orleans has blocked much of the natural flow of silt into the delta. That, in turn, has caused the delta to subside and made the city and its environs even more vulnerable to the waters of the Gulf of Mexico, which itself has been rising.

Upstream levee-building has also had the effect of turning a sluggish river into a fire hose, helping to destroy marshes and barrier islands that once provided some protection. The steady destruction of coastal wetlands by residential development and years of oil and gas drilling hasn't helped much either. The combination of subsiding land and rising seas has put the Mississippi Delta about three feet lower than it was 100 years ago.

All this, in turn, lends urgency to plans proposed by Louisiana politicians to restore natural hurricane protections by diverting water and silt from the river to coastal marshes and wetlands, and by rebuilding barrier islands. The effort is expected to take more than 40 years and cost an estimated $14 billion, substantially more than the $8 billion Everglades restoration project.

The administration budgeted $20 million for the project this year, mainly for the necessary planning studies. A lot more than that is going to be needed. New Orleans must learn to take care of nature if it hopes to survive it.

28 August 2005

White Island Plant Walk


This is the chronicle of the rest of my day in Marine Park, where I was to lead a Torrey Botanical Society plant walk.

White Island is a 73-acre former sand bar in the middle of Marine Park Creek. From the 1940s to 1960s, the site was built up through the addition of household garbage and sand. Areas with little sand cover and thus high levels of nutrients support Phragmites and mugwort. Note the sand bags in the photo below - these were put in place to keep the household garbage, the structural foundation of the island - from washing away.



The sections of the island harboring stockpiled sand today support a diverse array of grassland plants. But to get there, you have to hack your way through what seems like miles of Phragmites. It seemed like miles because I am sure it was miles...but only because my sense of direction was off. It took me quite a while to relocate the open grassland.

But finally I did. And it was like discovering a wonderland.

Eragrostis spectabilis, purple love grass


Pseudognaphalium obtusifolium, sweet everlasting


Solidago juncea, early goldenrod

Plants of White Island in Marine Park, Brooklyn (partial flora)
Torrey Plant Walk August 28, 2005

Typical Native Grassland Species

HERBS – Flat-topped goldenrod (Euthamia tenuifolia), sweet everlasting (Gnaphalium obtusifolium), pinweed (Lechea maritima), jointweed (Polygonella articulata), saltwort (Salsola kali), early goldenrod (Solidago juncea), seaside goldenrod (Solidago sempervirens);

VINES - northern dewberry (Rubus flagellaris);

GRASSES – beach-grass (Ammophila breviligulata), big bluestem (Andropogon gerardii), 3-awn grass (Aristida tuberculosa), purple love grass (Erigrostis spectabilis), panic grass (Panicum villosissimum), switchgrass (Panicum virgatum), little bluestem (Schizachyrium scoparium);

SHRUBS – false heather (Hudsonia tomentosa), northern bayberry (Myrica pensylvanica), winged sumac (Rhus copallinum), poison ivy (Toxicodendron radicans).

OTHER SPECIES FOUND (* = exotic, ! = invasive)

HERBS – common ragweed (Ambrosia artemisiifolia), Indian hemp (Apocynum cannabinum), mugwort (Artemisia vulgaris)*!, common milkweed (Asclepias syriaca), spotted knapweed (Centaurea maculosa)*, horseweed (Conyza canadensis), winged pigweed (Cycloloma atriplicifolium)*, white snakeroot (Eupatorium rugosum), bedstraw (Galium mollugo)*, camphorweed (Heterotheca subaxillaris)*, yellow wood sorrel (Oxalis stricta), pokeweed (Phytolacca americana), lady's thumb (Polygonum persicaria)*, sheep sorrel (Rumex acetosella)*, horse-nettle (Solanum carolinense)*, black nightshade (Solanum nigrum)*, sand spurrey (Spergularia rubra)*, common mullein (Verbascum thapsus)*;

VINES – hedge bindweed (Calystegia sepium), Oriental bittersweet (Celastrus orbiculata)*!, Virginia creeper (Parthenocissus quinquefolia);

GRASSES – silver hairgrass (Corynephorus canescens)*, common reed (Phragmites australis)*!;

SHRUBS – Japanese barberry (Berberis thunbergii)*!, autumn olive (Elaeagnus umbellata)*!, wrinkled rose (Rosa rugosa)*;

TREES – tree of heaven (Ailanthus altissima)*!, white mulberry (Morus alba)*!, black cherry (Prunus serotina), green ash (Fraxinus pensylvanica).

Unprepared



I always do this. I talk myself out of bringing along some obviously essential item because my field pack is too heavy. That is how I ended up this morning at the salt marsh of Marine Park without my boots.

To be fair, I had planned to stay out of the marsh itself, checking out the flora that rimmed the wet areas. I have seen Spartina alterniflora often enough that I could go without an up-close-&-personal viewing. What I didn't plan on was a poacher.

In the midst of my vegetative reverie, a middle-aged Asian man with a hand cart filled with tools & bags walked confidently by me. Suspicious. Sure enough, he proceeded to walk into the muck, pull out a tool & rake the marsh for mollusks. As you may have suspected, removal of anything from a park is illegal, especially the very animal life we are trying to conserve.

"Sir, I'm sorry, but you can't do that."
Nothing
"Excuse me, sir, you can't do that!"
Now he looks at me & smiles.
"Sir, you will have to stop that! You aren't allowed to do that!"
He shrugs his shoulders & gives me this look like he doesn't know what I'm talking about. So then I was reduced to repeating "No!" & "Stop!" while I walked out after him. I tried to stay dry, hopping from tussock to tussock, but that became futile after 5 minutes, when I slipped & went in to my knee. That's the thing with muck, you never know how deep it is.

By the time I reached him, he had out what I swear was a harpoon & was jabbing the water vigorously. He seemed to finally get it, & proceeded to leave without more protestation from me. As I climbed out of the low marsh, I watched him leave, cart in tow. I was so satisfied in having put an end to a poacher. I felt good.

Ten minutes later, I was in the nature center. This is a nice building which takes full advantage of the superb views with its large windows. As I was admiring the marsh, in the distance I saw a blue speck moving purposefully along the edge of the Spartina grasses.


26 August 2005

BBQ




Today, I was in Bronx River Park, monitoring a recently completed restoration project where much native wetland vegetation had been planted in place of Japanese knotweed. We were taking a lunch break, & relunctantly decided that we also needed to use the restrooms (which are horrifying on so many levels). As we approached the building, I smelled smoke. The source of the billowing gray plumes? A clean cut sixteen year old kid. He had an interesting little set up, as you can see from the photo.

"Put it out!" I yelled. He responded as if underwater, all movement slow & deliberate. He did make some attempts to squelch the raging fire, none of them very impressive. Meanwhile I was fuming. It hasn't rained in weeks! What if this had gotten out of control? Fortunately it was rather far from the forest. Unfortunately it was right next to the playground & adjacent to the Metro-North train line. Obviously, I was not dealing with the sharpest knife in the drawer.

He finally climbed up, out of the pit, to speak to me. He had an innocent face & indescipherable language skills.

"Da ya wa sa ra?"
"What?!?"
"Da ya wa sa ra?"
"Again, what?"
"Da ya wa sa ra?"
"I have no idea what you are trying to say."
"Ra! Ra! Ra!"
At which point, he holds out his hands to offer me - not "ra", but "ribs".

"They're good. I make good bar-be-cue"
"Well, there are facilities in other parts of the park where you can cook out to your heart's content. But you cannot do it here. We don't allow make-shift grilling."
"Oh. But they're gooooooood."
"No doubt, but you'll have to find yourself another place to hone your culinary skills."

During the course of our little tete-a-tete, he began to walk closer & closer to me. Finally, I told him he was welcome to stay & wait with me for the police to arrive.

After an "oh, man!", he hoped on his bike, pre-packed with his cooking gear & rode away. It was then I noticed the goulish Halloween mask attached to his milkcrate full of tools.

22 August 2005

HGG: Canada St. Johnswort



In today's installment of "Home Grown Greenery" we take a closer look at Hypericum canadense (Canada St. Johnswort). This native species is a member of the Clusiaceae or Mangosteen family. As you may have guessed, this family has its center of diversity in the tropics, with a few genera found in the more temperate climes. In fact, trees & shrubs are the more common plants found in this family, which makes the herbaceous H. canadense all the more intriguing.

Canada St. Johnswort may be an annual or perennial, but is always diminuitive, growing only to 20 inches tall. As with other Hypericum species, its leaves are opposite from each other, & alternate at 12/6 o'clock & 3/9 o'clock. Thus as one looks down the stem from above, they notice a cross pattern. This is the derivation of "St. John" (wort is the Old English word for plant).

From July through September, tiny, 5-petaled, yellow flowers appear on the tips of every stem. If pollinated, fruits develop - dark red conical capsules containing many small seeds.

The best place to find Canada St. Johnswort is in open, sunny, poorly drained areas such as marshes. This particular plant was found in southern Staten Island in an area of sandy glacial outwash with ribbons of clay soils. This plant is rare in NYC, as are its brethren - there are 5 other Hypericum species in the five boroughs, four are native, all are uncommon. One of the biggest threats to its future is the encroachment of trees & shrubs - shaded out by woody species as a result of succession. This is, of course, with the understanding that the biggest threats to our flora are always lack of conservation leadership. NYC natural areas have been destroyed through development & degraded by exotic invasives.

20 August 2005

Butterflyweed as cut flowers


I bought this bunch of butterflyweed (Asclepias tuberosa) today at the Greenmarket. Most people think "weeds" when native plants are mentioned, but you have to admit that these are striking.

13 August 2005

Jewelweed Runs Amok in England

Jewelweed (Impatiens capensis), native here, invasive abroad.

Our ubiquitous jewelweed is an unwelcome visitor in England. Eric von Wettberg is studying the species genetic bottleneck in its adopted digs. Since a small number of individuals made the initial invasion, he is looking at how the plant has evolved its shade avoidance response (by which plants fit their growth patterns and phenology to maximize their success under a range of light conditions) to fit its new environs.

More on his work

07 August 2005

An Alien Invader Spawns a Species

From the Christian Science Monitor:
The influence wrought by invasive species could fuel an "explosion" of ecological change "to levels beyond all expectation."

04 August 2005

Why didn't I think of this?

Yes of course! The forest is full of birds! And to think, all these years, I had been assuming that their appetites were sated by the abundant fruits, seeds, & insects that forests naturally provide them. Oh, what a fool I have been!

As seen in Bronx River Park

Organic farms 'best for wildlife'

Organic farms are better for wildlife than those run conventionally, according to a study covering 180 farms from Cornwall to Cumbria.

The organic farms were found to contain 85% more plant species, 33% more bats, 17% more spiders and 5% more birds.

Read article from BBC news

01 August 2005

Ultra-violet Flowers

This website is a wonderful introduction to the world according to insects. It is easy for us humans to forget that flowers look as they do not to draw satified sighs from gardeners but to attract potential pollinators - critical to their survival. And what we see is not the whole story.

Here is Pacific silverweed (Potentilla anserina) to humans:










And here is what insects see:

26 July 2005

UN to Court over "Devil Tree"






A tribal community in Kenya is planning to take a United Nations agency to the International Court of Justice in The Hague for introducing a harmful tree (the mesquite - Prosopis juliflora) to the country. The action, thought to be a world first, is being brought by the Ilchamus people of the Rift Valley, again the Food & Agriculture Organization (FAO).

Read more

24 July 2005

Plants Shape Their Environment

And people think plants are boring! Below is an excerpt of Dr. Valerie Eviner work on how plant species affect ecosystem processes with Institue for Ecosystem Studies in Millbrook, NY.

Plants not only respond to their environment, but also actively alter their habitat. Different plant species can have distinct effects on almost every aspect of ecosystem structure and function. However, most studies investigating the effects of plant species on ecosystems have focused on one type of effect (e.g. N cycling, water dynamics, erosion, effects on other organisms). In order to understand and predict the ecosystem consequences of vegetation change, it is vital to consider the multiple, simultaneous roles that species play in ecosystems. These functions are often distributed independently among species.

More on this study

More on Dr. Eviner's work

15 July 2005

Parks Even Parks Doesn't Love

Highbridge Tower

SHAME on you, Adrian Benepe!

(As I missed the boat on linking it, here is the full article. Note that all fancy font work is mine, as are the photos - ed.)


METROPOLITAN DESK - NY Times

Parks Even the Parks Dept. Won't Claim; City Says Some Wretched Areas Aren't Worth Fixing
By TIMOTHY WILLIAMS

At University Woods, a city park high above the Harlem River in the Bronx, hypodermic needles, feces and used condoms littered the grounds on a recent day. Several large trees lay across the main pathway. Broken animal bones that some said bore traces of Santeria rituals were visible.

The 3.3-acre municipal park, whose grounds have long been a hideaway for drug users and prostitutes, was named the city's worst small park last month, for the third year in a row, by the advocacy group New Yorkers for Parks.

Parks Commissioner Adrian Benepe says city parks are in better condition now than they have been in nearly 40 years. He added, however, that a small percentage of the parkland the city owns -- including University Woods -- is not conducive to being actively maintained by gardeners, and that to do so would be ''a waste of money.''

''That park is not a park,'' Mr. Benepe said, referring to University Woods. ''That park is a vestigial landscape on the side of a hill. It has a series of paths that lead nowhere. It's a cliff side. It will never be a park.'' He added, ''Just because something is in our inventory doesn't mean it's worth taking care of.''

New York City has acquired almost 300 acres of parkland since Mayor Michael R. Bloomberg took office in 2002. But critics say that the city started neglecting some existing parks -- most in poor neighborhoods -- long before Mr. Bloomberg named Mr. Benepe parks commissioner shortly after taking office.

Mr. Benepe bristles at the suggestion that the Parks Department favors certain areas of the city over others. ''The reality is that across the city in every neighborhood, the parks are better,'' he said. And while he says there is no formal two-tier system when it comes to maintaining city parks, he acknowledges that some are better cared for than others.

Just how many of the city's 1,700 public parks, playgrounds and recreation facilities are not actively maintained is not clear, but Mr. Benepe said that a limited number of city parks would ''never be great parks'' because they are on land unsuitable to be developed as parkland, or because they are in neighborhoods that are no longer significantly residential.

There is no list, no formal process leading to a park being written off. But it is clear that some parks, over a period of decades, have simply fallen out of favor with the Parks Department, which says that every park is supposed to be cleaned at least once a day.

The department, which decides how often horticulturists visit each park and what capital projects to pursue, has seen its operating budget increase to $201 million in fiscal 2005 from $152 million in fiscal 1997, and the department's capital budget in the current fiscal year alone is $850 million, up from $550 million last year. Much of that amount will be spent on developing recently acquired parkland and on parks along the waterfront, according to Parks Department figures.

Despite their unkempt pockets, some parks, like Aqueduct Walk Park in the Bronx, are heavily used. Many others, however, are similar to University Woods, and attract few visitors. Large swaths of Highbridge and Fort Washington Parks in Upper Manhattan, Soundview, Ferry Point and Pelham Bay Parks in the Bronx, Highland Park on the Brooklyn-Queens border and Idlewild Park in Queens, among others, have been designated natural areas by the Parks Department, to preserve wetlands and other natural habitats. Such areas require less rigorous maintenance than others. Some of these are now impassable for all but the most determined parkgoer due to overgrown trails, poison ivy, homeless encampments and garbage. Abandoned cars and boats have been left in some of the parks.

What these parks have in common is that they rely almost exclusively on city money, while the city's best-maintained parks -- Central Park, Bryant Park and Prospect Park among them -- are managed in part by private conservancies that raise money and hire workers independent of the Parks Department. The neglected parks also lack the community support and involvement present in the neighborhoods around the city's most successful green spaces.

''It is completely outrageous that poor communities are given this type of service when other parks are given adequate service,'' said Geoffrey M. Croft, president of New York City Park Advocates. ''Having prostitutes and drug users fill a park when a community needs parks, goes against everything government is supposed to do in terms of providing services and protecting people.''

The Police Department, not the Parks Department, is responsible for tackling serious crime in city parks. But Mr. Croft said that unmaintained areas provided a natural shelter for criminals.

Mr. Benepe said that any problems that exist are isolated, and that the department has a rigorous inspection process. ''This is a big system and you can't address every little problem,'' he said. Mr. Benepe said a lack of resources was not an issue either. ''The challenge is how to spend all the money we've been given,'' he said.

In all, the Parks Department's 28,800 acres take up about 14 percent of the total land mass in the city's five boroughs. About 12,000 acres of parkland have been designated natural areas, though some, like Central Park's Ramble, are well maintained and free of the trash and invasive species that plague the natural areas of other parks.

University Woods, for instance, has failed the Park Department's own cleanliness and general condition inspections for the past three years, and if its current circumstances are any indication, it has little hope of ever being a haven for anyone seeking a respite from city life. The last capital project in the park -- which involved repairing fences and walkways that are again in disrepair -- took place in 1997.

On a recent weekend in University Woods, in University Heights, a man and woman were seen having sex against a tree. Encampments for homeless people were scattered in the underbrush. Several areas had been littered with hypodermic needles, used condoms, needle cleaning kits and wrappers for ''Savage'' and ''TKO'' brands of heroin. And piles of feces could be seen on staircases.

The only evidence of the park's benches were rivet holes in the ground. There were no garbage cans, lights, restrooms or staff workers. Visitors have reported seeing a dead goat and the skulls of various animals, apparently after they had been sacrificed.

Julio Calderon, 31, who was walking a large pit bull outside the park, said he never stepped inside University Woods, though he lives nearby. ''The park is dangerous,'' Mr. Calderon said in Spanish. ''People who are in there do things I don't want to see.''

The parks commissioner said he would like to trade University Woods to a developer for more suitable park property, or to fence it off. ''You have to be pragmatic about these things,'' Mr. Benepe said.

The Bronx borough president, Adolfo Carríon Jr., agreed but called the park's current neglect a ''disgrace.''

''University Woods cannot continue to be what it is,'' he said.

A healthy forest within Highbridge Park. Recently found in the park was a fern species rare in NYC - Spinulose woodfern (Dryopteris carthusiana)

Not far away, in Highbridge Park, which stretches for two miles across Upper Manhattan, the scene was even more grim on a recent weekend. Huge sections of the 119-acre park set aside as natural areas have been taken over by homeless people who have built permanent shacks made of sheet metal and steel pipes driven into the earth. One of the park's residents is a heroin addict and prostitute who would give her name only as Joanne. Her makeshift house has a bed and a nightstand. She said she had lived there for 13 years. Men smoked crack cocaine a few feet from where a youth baseball game was being played.

Kelvin, who would not provide a surname, lives in the park underneath a Harlem River Drive entrance ramp. He lifted his shirt to show his heavily bandaged chest, where he said he had been stabbed the week before. He tapped a Bible on his nightstand, which lay atop some pornographic magazines. ''I almost died,'' he said in Spanish. ''God was with me.'' On a concrete wall, someone has scrawled graffiti: ''This might be the only place where New York is still New York.''

Mr. Benepe said that while Highbridge Park is ''much better than it was 10 years ago,'' it had been ruined decades ago when freeway ramps were built across it.

Mr. Benepe, who expressed both skepticism and surprise at the park's condition when told about it, said the city's plan was: ''Let nature take its course.'' ''Trees are growing, insects are buzzing, oxygen is being produced, and there's nothing wrong with that,'' he said. (Oh, that must be why the NYC Parks Dept is restoring the forests of Highbridge Park with native species - way to be abreast of your own agency, Benepe. And thanks too for negating, in one fell swoop, all the hard work done in Highbridge by both NYC Parks' Natural Resources Group & Bette Midler's NY Restoration Project).

Mr. Croft, the parks advocacy group president, said, ''Having prostitutes, drug dealers and drug users in parks is not going back to nature.''

Photos: Park visitors navigated the overgrown steps in Highbridge Park in Upper Manhattan after taking a swim in the pool. (Photo by G. Paul Burnett/The New York Times); University Woods in the Bronx, which is rife with litter, is rated the city's worst small park. (Photo by Richard Perry/The New York Times)(pg. B1); Some sections of Highbridge Park have been overtaken by drug users, prostitutes and the homeless.; All that remains of a bench above an overlook in Highbridge Park are the supports that held the seats. (Photographs by G. Paul Burnett/The New York Times)(pg. B6)

14 July 2005

Invasive Norway Maples Threatens LI Forests


Exotic Norway maples invading a forest in Queens. Note the dense shade & lack of ground vegetation.

From the Long Island Botanical Society's newsletter, summer 2005 - summary of Wei Fang's research & article:

Norway maple (Acer platanoides)was first introduced to this country in 1760s & quickly gained popularity as an ornamental species. By the late 1990s, it was considered to the be the #1 planted street tree in the U.S. In recent years, Norway maple has expanded from its ornamental realm into sections of parks & nature preserves. Once there, it forms single species (monospecific) stands & inhibits groundcover establishment.

Wei Fang's three year study showed that not only is Norway maple expanding its reach within the forests of Long Island, but as the number of Norway maples increases, so too does the number of other exotics, such as Japanese honeysuckle (Lonicera japonica) & winged burning bush (Euonymus alatus). Furthermore, limits the availability of resources to other plants - its larger leaves exclude other vegetation from receiving sunlight & it changes soil chemistry resulting in higher nitrogen loss.

Here is the abstract.

07 July 2005

Rene Russo is my hero

JUST about everyone in Los Angeles has a cause, but Rene Russo's is a decidedly lonely mission. While many of her Hollywood peers use their celebrity to exalt the hybrid Prius or bash Republicans, she is championing plants that many homeowners are unfamiliar with or, worse, dismiss as weeds.

Ms. Russo has become an advocate for the use of California native plants, which she is trying to promote as a low-maintenance panacea for the region's water supply uncertainties.

"People have equated natives with chaparral, with brush, with dead, and it's erroneous," she said with obvious frustration in an interview at her Brentwood home.

"I love the garden more than the house," Ms. Russo said as she walked down the rugged paths of her property.

Flora With a Star in Its Corner - New York Times

30 June 2005

Google Earth

Google Earth combines satellite imagery, maps and the power of Google Search to put the world's geographic information at your fingertips.

Some suggested uses:

  • Amaze your friends with the proximity of Superfund sites to their homes.
  • Shock your family with the overwhelming loss of natural areas to strip malls & condos.
  • Horrify coworkers with the mindnumbing number of roadways that cut through our parkland.

23 June 2005

Struggles with an Invader

Back to Nature & What a Mess - from today's New York Times

An excellent example human's unexpected consequences on the landscape. Here, Anne Raver's struggles to contain the invasive tree - black locust (Robinia pseudoacacia) on the family farm. Anne, I feel your pain. However, I wish she had discussed & compare the ecological roles of native early successional trees & exotic invasives - they are quite different. When the latter dominates an area, it is not succession, nor is it competition or evolution - it is an invasion. All our open space, even so called "pristine" landscapes, need to be nudged along. We are now in the sad position of having to manage lands just to enable processes that should occur normally on their own.

More about black locusts

19 June 2005

Sundrops in gardens


Sundrops (Oenothera fruticosa ssp. glauca) a native plant and a lovely garden addition.

Raindrops on roses and whispers on kittens...

17 June 2005

Chasing Beetles in NYC on NPR

"The treetops of Central Park in New York City are being used by Western smoke jumpers. The folks whose regular job is to parachute into wildfires are propelling themselves into maples and elms in an attempt to stop the killer Asian longhorned beetle"...so reads the copy on the story of ALB in Central Park. Great coverage, but such drama...Federal firefighters from the west climbing trees...too bad they can't see their way clear to talking more about 1) how people every day contribute to exotic invasives destroying our natural areas and 2) what they can do about it.

Anyway, here's the story

07 June 2005

Pines Threatened by Exotic Wasp Found Upstate


Cornell University reports that one of its entomologists discovered a single specimen of
Sirex noctilio Fabricius, an Old World woodwasp, raises red flags across the nation because the invasive insect species has devastated up to 80 percent of pine trees in areas of New Zealand, Australia, South America and South Africa. If established in the United States, it would threaten pines coast-to-coast, particularly in the pine-dense states in the Southeast. One target would be loblolly pines in Georgia.

Finding one bug in a trap is no small matter. Where there's one, there's likely to be more, says E. Richard Hoebeke, a Cornell senior extension associate in entomology. "Whenever you find an insect in a trap, it probably is established."

Learn more about S. noctilio

31 May 2005

Catskills 3


Painted trillium (Trillium undulatum)



Balsam fir (Abies balsamea)



Bunchberry (Cornus canadensis)



Hobblebush (Viburnum alnifolium) a very lovely and very common shrub in these parts



Marsh violet (Viola cucullata)


MAY 30, 2005
SLIDE MOUNTAIN

TREES
Balsam fir (Abies balsamea)
Moosewood (Acer pensylvanicum)
Red maple (A. rubrum)
Sugar maple (A. saccharum)
Mountain maple (A. spicatum)
Yellow birch (Betula alleghaniensis)
Mountain paper birch (Betula papyrifera var. cordifolia)
Beech (Fagus grandifolia)
Red spruce (Picea rubens)
White pine (Pinus strobus)
Pin cherry (Prunus pensylvanica var. pensylvanica)
Choke cherry (P. virginiana)
Black cherry (P. serotina)
Red oak (Quercus rubra)
Mountain ash (Sorbus americanus)
Eastern hemlock (Tsuga canadensis)

SHRUBS
Large leaf holly (Ilex montana)
Mountain laurel (Kalmia latifolia)
Partridgeberry (Mitchella repens)
Skunk currant (Ribes glandulosum)
Appalachian gooseberry (Ribes rotundifolium)
Northern blackberry (Rubus allegheniensis)
Red raspberry (Rubus idaeus)
Red elderberry (Sambucus racemosa var. racemosa)
Early lowbush blueberry (Vaccinium angustifolium)
Hobblebush (Viburnum lantanoides)

FORBS
Mountain aster (Aster acuminatus) (syn.
Oclemena acuminata)
Wild sarsaparilla (Aralia nudicaulis)
American golden saxifrage (Chrysosplenium americanum)
Spring beauty (Claytonia caroliniana)
Bluebead (Clintonia borealis)
Threeleaf goldthread (Coptis trifolia)
Bunchberry (Cornus canadensis)
Trout lily (Erythronium americanum)
Largeleaf avens (Geum macrophyllum var. macrophyllum)
Canada mayflower (Maianthemum canadensis)
Whorled wood aster (Oclemena acuminata) – Aster
Common wood sorrel (Oxalis montana)
Large-leaved goldenrod (Solidago macrophylla)
Claspleaf twistedstalk (Streptopus amplexifolius var. amplexifolius)
Twisted-stalk (S. roseus)
Starflower (Trientalis borealis)
Wake robin (Trillium erectum)
Painted trillium (T. undulatum)
Wild oats (Uvularia sessilifolia)
Sweet white violet (Viola blanda)

FERNS & ALLIES
Intermediate fern (Dryopteris intermedia) Evergreen fronds old & newly emerging
Shining clubmoss (Huperzia lucidula)
Running clubmoss (Lycopodium clavatum)
Ground pine (Lycopodium obscurum)

GRAMINIODS
Northern long sedge (Carex folliculata)
Greater bladder sedge (Carex intumescens)
Common hairgrass (Deschampsia flexuosa)
Small-flowered woodrush (Luzula parviflora)

29 May 2005

Catskills 2


The most massive beaver dam ever! Beavers are...(wait for it)...extirpated (gone, dead, locally extinct) in NYC.

Today we walked out to a bog that had been "lost" for over 100 years. Since this site has a number of rare species, I will limit site location to "Ulster County".

The walk out there was enchanting - an abundance of Eastern hemlocks (Tsuga canadensis), young and old co-mingling - these were, amazingly, free of the
hemlock woolly adelgid, (Adelges tsugae), the trees in our neck of the woods are usually older (i.e, no regeneration) and dying (i.e., infested with aphids). The hemlocks cast a deep, dark shade. A thick layer of sphagnum moss carpeted the forest floor, punctuated by drifts of ferns and common wood sorrel (Oxalis montana). I half expected to see leprachauns darting between tree trunks. This wood sorrel is not the same plant as the ubiquitous sidewalk weed we have here. If only O. montana were common in the five boroughs, but that's what you get for being sans mountains.

Long beechfern (Phegopteris connectilis), with wood sorrel & sphagnum moss peaking out from underneath. More plants native to New York State that are absent in the five boroughs. sniff.

The bog itself was amazing, with more heath shrubs than you could shake a stick at. There were blueberries and cranberries (Vaccinium spp.) and laurels (Rhododendron spp.) and winterberries (Ilex verticillata). I was in heaven. I love the heaths! (Maybe because it reminds me of the romantic moors in Scotland...)

Another native heath shrub, bog laurel (Kalmia polifolia). I wish this were in the city.

Another highlight was tussock cottongrass (Eriophorum vaginatum var. spissum). This bog is the plant's only appearance in Ulster County.

Despite it's common name,
tussock cottongrass (Eriophorum vaginatum var. spissum) is actually a sedge. Ah, botanical linguistics.

One of the saddest sights was the discovery of plastic pots strewn around the bog. This was an indication that people steal plants from this place to sell on the cheap. This is especially true for plants that are popular/unusual and slow growing, such as trilliums, orchids, heath shrubs, pitcher plants, and sundews. Once these plants are taken from there ecological context, their chances of survival are slim. Your backyard in Brooklyn sure as hell ain't a bog. Plant poaching is far too prevalent. Be mindful of plants offered for cheap, potted in soils that look "natural" (as opposed to a greenhouse mixture).


False hellebore (Veratrum viride). This beautiful native forb is extirpated (locally extinct) in NYC. That's a sad thing.

The day ended with a scramble to see the Adoxa before sundown. This tiny plant is typical of circumboreal regions. This population is a disjunct, with other populations found in the western U.S. Muskroot (Adoxa moschatellina) is rare in NY. We found the strikingly drab forb along a shale road cut. It was neat to see the muskroot, but what really caught my eye was the purple clematis (Clematis occidentalis var. occidentalis). Look below, can you blame me?



Purple clematis (Clematis occidentalis var. occidentalis)



Plant List - These are just the species I jotted down...

5/29
WALK TO BOG

TREES
Yellow birch (Betula alleghaniensis)
Red spruce (Picea rubens)
Eastern hemlock (Tsuga canadensis)

SHRUBS
Creeping snowberry (Gaultheria hispidula)
Eastern teaberry (G. procumbens)
Bog laurel (Kalmia polifolia)
Large cranberry (Vaccinium macrocarpon)
Small cranberry (Vaccinium oxycoccos)

FORBS
Threeleaf goldthread (Coptis trifolia)
Early coralroot (Corallorhiza trifida)
Bunchberry (Cornus canadensis)
Common wood sorrel (Oxalis montana)
Northern pitcher-plant (Sarracenia purpurea)
Heartleaf foamflower (Tiarella cordifolia var. cordifolia)
Purple trillium (Trillium erectum)
False hellebore (Veratrum viride)

GRAMINOIDS
Tussock cottongrass (Eriophorum vaginatum var. spissum)

FERNS
Long beechfern (Phegopteris connectilis)
Eastern marsh fern (Thelypteris palustris)

Sphagnum sp.

MESIC FOREST

FORBS
Red baneberry (Actaea rubra)
Jack-in-the-pulpit (Arisaema triphyllum)
Ramps (Allium tricoccum)
Crinkleroot (Cardamine diphylla)
Blue cohosh (Caulophyllum thalictroides)
Horsebalm (Collinsonia canadensis)
Squirrelcorn (Dicentra canadensis)
Trout lily (Erythronium americanum)
Fragrant bedstraw (Galium triflorum)
Virginia waterleaf (Hydrophyllum virginianum)
Twisted-stalk (Streptopus roseus)
Foamflower (Tiarella cordifolia)
Purple trillium (Trillium erectum)
Painted trillium (T. undulatum)
False hellebore (Veratrum viride)
Canada violet (Viola canadensis)
Marsh violet (V. cucullata)
Yellow forest violet (V. pubescens)
White violet (V. renifolia)
Roundleaf yellow violet (V. rotundifolia)
Common blue violet (V. sororia)

FERNS
Ostrich fern (Matteuccia struthiopteris)
Christmas fern (Polystichum acrostichoides)


SHALE SLOPES

SHRUBS
American black currant (Ribes americanum)
Red elderberry (Sambucus racemosa var. racemosa)

FORBS
Red baneberry (Actaea rubra)
Muskroot (Adoxa moschatellina)
Pussytoes (Antennaria canadensis)
Wild columbine (Aquilegia canadensis)
Early saxifrage (Saxifraga virginiensis var. virginiensis)

FERNS
Western oakfern (Gymnocarpium dryopteris)

VINES
Purple clematis (Clematis occidentalis var. occidentalis)