"growing wild along the Atlantic coastal plain from southern New Jersey 
south to Florida, and then west along the Gulf into Louisiana. It [Cleistes 
divaricata] loves fire-adapted pinelands, and is a fairly typical component 
of damp savannas. This is a sun-loving species, most commonly seen in 
habitats that are wet for a good portion of the year.

The plant produces a slender, smooth stem, about 2 feet tall, from a 
cluster of knotty roots. A single, strap-shaped leaf will be found about 
halfway up the stem, with a single... flower at the very top, or very 
rarely, with two or three blossoms. The flower bears three... sepals 
arising in the "back," green to purplish-brown, and up to about 3 inches 
long. These sepals may be straight or curling. Two white petals project 
forward, closely covering a pink, trough-shaped lip below, such that the 
opening to the pollen and stigma appears somewhat hidden.

The genus name for this plant comes from a Greek word meaning "closed," an 
allusion to the architecture of the petals and lip. Bumblebees are probably 
the most important pollinators for this showy species, which is reported to 
have a floral fragrance something like a daffodil. As with many other 
orchid species, the flowers, once opened, tend to last a relatively long 
time before fading and falling.

This coastal resident has 50 or so near relatives, all of which are from 
South America, mostly Brazil. One of its closest relatives also occurs in 
the Southeastern United States, and in pine savannas. This curious cousin, 
however, is distinguishable by being a bit shorter, and with smaller 
flowers, which give off a fragrance of vanilla.
...
Herbarium at the University of South Carolina, in the Department of 
Biological Sciences...
offers free plant identifications. Visit www.herbarium.org or call 
803-777-8196."

source : http://www.charleston.net/stories/?newsID=96732&section=garden

**********
regards,

VB 


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