71 
hbreviatis oblorigis tridentatis Raf.—Polymnia 
Rob. p. 441. Stem over nine feet high, spotted 
of purple, leaves two feet long and nearly as 
broad, with five or seven large sinuated angles ; 
flowers yellow pedunculated, exterior perianthe 
4 phylle, interior lOphylle, crown with 10 rays, 
10 seeds oval, angular, size of a pea, covered 
by the folioles of the interior perianthe : 20 
male central floscules, anthers brown. It grows 
among trees and blossoms in August 
221. Bidens frondosa L.—B. 1. Rob. p. 442. Stem 
brown angular branched, three or four feet high, 
interior perianthe scariose and coloured ; seeds 
compressed with two hooked arols. It blossoms 
in October. 
222. Bidens bipinnata L. Rob. p. 443. Stem black¬ 
ish, rising four or five feet, branches slender 
and long, three or four neutral rays short and 
toothed, seeds forming a globular head with 
hooked awls, they are disseminated by the her¬ 
bivorous animals to whose skin they cling ; grows 
in woods. 
-223. Verbesina virginica L.—V. alata Rob. p. 443. 
Stem about seven feet high, round canescent 
rough, leaves rough above, tomentose underneath 
oblong acuminated ; perianthe tomentose striated* 
folioles squarrose, four small white laciniated rays, 
anthers grey, (phoranthe hairy!) Vulgar name? 
Herbe a trois quarts. The roots of this plant are 
a valuable sudorific and depuratire, they are 
i 
