26 
NORTH AMERICAN 
244. Parthenium amplectens Raf. P. in- 
tegrifolium L. and Authors ? Stem angular 
rough elate, leaves all rough ovate oblong am- 
plexicaule serrate acute, corymb lax, fol. of pe- 
rianthe ovate rounded acute carinate. — Glades 
of Kentucky, 2 to 4 feet high, leaves 3 to 6 
inches long, lower hardly attenuate at base, 
flowers whitish. P. integrif. is a name illu- 
sive and to be abolished, it was given by Lin. 
in contrast with P . hysterophorus with multi- 
fid leaves, that now is a peculiar Genus. The 
Linnean sp. figured in Dillen and Plukenet had 
leaves ovate crenate hirsute, lower with cari- 
nate petiols, upper sessile, flowers snowy white, 
tip of perianthe black, and may still be differ- 
ent from all mine, found in Virginia, might be 
called P. dillenianum ? — The sp. of Elliot is 
still somewhat different, it may be called P. 
elliotanum? stem 1 or 2 feet striate roughish, 
leaves rough toothed ovate lanceolate ; lower 
sessile, upper amplexicaule— as near to P. an - 
gustifolium as to this. See 280. 
245. Urtica verna Raf. nearly smooth, 
stem simple slender, leaves remote opposite pe- 
tiolatfe acuminate laciniate serrate, the lower 
cordate, medial ovate, upper lanceolate ; male 
spikes inferior shorter than petiols, female fl. 
glomerate above, glomerules nodding geminate 
peduncled. — Kentucky and other Western 
States, in woods, flowers vernal in may, pedal, 
leaves small, a true Urtica with male fl. 4 part- 
ed 4andrc. Var. gracilis very slender virgate, 
leaves small none cordate. 
246. Oxalis rupestris Raf. stem erect an- 
gular rufous pilose, leaves glaucous smooth, 
folioles obcordate, sinus obtuse, peduncles lon- 
ger than leaves 3-5flore, sepals lanceolate, pe- 
