Thursday, September 29, 2011

Wildflowers & Waterfalls
George Ellison and Tim Spira Team up Oct. 21 to benefit Discover Life in America

This post first appeared in the Compleat Naturalist e-newsletter and was written by Laura Mahan, co-owner of the Compleat Naturalist, and the person who is organizing this presentation.

George Ellison writes the Nature Journal column for the Asheville Citizen-Times, among other things. He is well-known in our area as an excellent naturalist, writer, and teacher. This spring he wrote a review of the new book by Dr. Tim Spira, Wildflowers & Plant Communities of the Southern Appalachians & Piedmont, about which he said, "I never thought I'd see anything this good on this topic for this region in my lifetime." When he finally got to meet Tim, the two hit it off as fellow botanizers and they came up with the idea of doing a program together.

So that's how this program idea was born. George and Tim came to Laura Mahan and volunteered to do a presentation. The speakers did not want to be paid, but instead suggested that proceeds be given to a non-profit group. Compleat Naturalist owner Laura Mahan serves on the board of directors of Discover Life in America, and they agreed that this would be an excellent organization to support.

The next question was location-- where to have the program. The group decided to ask the Cathedral of All Souls in Biltmore Village, just a block away from The Compleat Naturalist, if they could have a presentation in the Parish Hall, and the church was most agreeable and supportive. Afterward participants will go to The Compleat Naturalist for a party and socializing.
We think this is a wonderful event that celebrates the beauty and biological diversity of the mountains while supporting a worthwhile cause, and giving everyone the opportunity for fun and socializing with other nature-minded folk. We hope you can come!

Oct. 21, 7-9 pm: Wildflowers & Waterfalls: A Closer Look (starts at Cathedral of All Souls; party at The Compleat Naturalist; Biltmore Village, Asheville, NC)

Monday, July 25, 2011

Sassafras Arching Trunks

Trees such as sourwood, black gum, and river birch often having a pronounced bend to their trunks. I've always assumed that it is a phototrophic response whereby the stems are simply growing towards the area where light is most readily available. But in the Sassafras trees growing in our home landscape (Clemson) something else seems to be going on. In the last 5 years or so there have been two years in which the female trees have had a super abundant fruit crop and the weight of all those developing fruits caused the stems to bend downward during the several weeks that the fruits matured. These periodic heavy fruit loads, I believe, contribute to the permanent bend often seen in Sassafras trunks. Additional support for this hypothesis is that male trees, which lack the burden of producing weighty fruits, generally have much straighter trunks than do the females, at least in our landscape. It would be interesting to see if this pattern holds true for Sassafras "in the wild".

Sunday, July 10, 2011

Black cohosh

Black cohosh (Actaea racemosa) is currently in flower off the Blue Ridge Parkway. It's easily recognizable by its 3-8 ft tall flower stalks with tassel-like white flowers and coarsely toothed leaflets. The fetid smelling flowers attract carrion flies and beetles which function as pollinators. In a pinch, you can rub the flowers on your exposed skin to ward off mosquitoes; however, in so doing you may attract carrion flies and beetles which think you're dead meat (not to worry, they don't bite).

Monday, May 30, 2011

Fire pink (Silene virginica)

Fire pink (Silene virginica) tends to be restricted to relatively open areas (such as rocky slopes with shallow soils) as it is a poor competitor. So, if you add this plant to your garden, you'll want to prevent neighboring plants from getting too close and overtopping it.

Fire pink is a classic hummingbird-pollinated plant as it has tubular red flowers with abundant nectar, no landing platforms (as is typically found in bee or butterfly-pollinated plants) and no detectable floral odor. The flowers depend on hummingbirds to transfer pollen from the anthers of one flower to the stigma of another for successful fruit and seed production.


Mountain laurel


Mountain laurel (Kalmia latifolia) is currently in flower off the Blue Ridge Parkway in the mountains of North Carolina. Look for the white to pink bowl shaped flowers in dense showy clusters. While plants can be found both in open sunny areas and in shaded sites under a forest canopy, it's those plants that receive more sunlight that flower most prolifically.

Friday, May 20, 2011

Beargrass in flower

Beargrass (Yucca filamentosa) is now in flower in dry open woodlands, on rock outcrops, and along roadsides in the piedmont and mountains. For fruits to form, this plant requires the pollination services of a tiny moth (the Yucca moth). Unlike all but a few pollinators, the Yucca moth intentionally pollinates the flowers. After pollinating a flower, a female moth lays eggs in the ovary, the larvae hatch, and then feed on the developing seeds. Usually about 30 % of the developing seeds are eaten. In this plant-insect mutualism, the flowers get pollinated and the moth is rewarded not by pollen or by nectar (the usual floral rewards) but by seeds for its larvae. Look for the tiny cream-colored moths hanging out in the flowers during the day.