MILKWEED FAMILY. ' 263 
2, A, tubero’sa, L. heme ; not lactescent ; stem ascending, divari- 
chiens branched at s t, leafy ; aan: oblong-lanceolate or linear- 
oblong, mostly alternispscnbinse lowest opposite, subsessile ; umbels 
paietrous, lateral and terminal, often torating a spreading c orymb. 
Tuserovus Asciepias. Butterfly-weed. Pleurisy-root. 
Whole plant mostly very hairy. Root perennial ; large, tuberous. Stem about 2 feet 
a generally more or less are or leaning ; branches spreading and often recurved. 
ves 2-4 inches poner nd half an inch to an inch be rag oo ten or rarely 0 
lini ey 
5 ute 0! tus t 
basi ery 8 he rt petio right eka other ;—the hoods erect, 
penal ‘oblong, — J Seeapiiy pewrieers pet te the infolded gears with each an obtuse’ 
tooth near the bas — subte bess tapering to a point, ved. Follicles about 4 
inches sag 00 Ram rentricose, uminate » tomentose-pube spent 
Old fields, a eid fene eat : thro ughout the United States. Fl. July-August. 
Fr. Sept. - 
Obs. 
or a ag ena : aud ‘hoigh a aoe coarse a is not a ‘colle 
one. When in bloom, the bright orange-colored umbels of this eae 
are quite cane wy. The root once had & reputation for being medici 
but it is now generally neglected. 
2. ENSLEN’IA, Nutt. Ensienta. 
[Dedicated to Enslen, an Austrian botanist, who collected in the Southern States wae in 
the e present century.] 
Calyx 5-parted. Corolla 5-parted ; the divisions erect, ovatetanceolate. 
Crown of 5 free membranaceous leaflets, whic h are ao neta obscurely — 
lobed at the apex, where Wiey have a pair of flexuous awns united at 
thers nearl 
pias. 
LE, ant hen. Leaves pan ovate-heart-shaped, acute, long- 
ear, flowers small, in raceme-like clusters on slender axillary pe- 
cles. 
Wauitisu ENSLENIA. 
Stem 8 -12 feet high, — slightly pubescent or smooth. Leaves 3-5 inches long 
and nd about the same high, dth, with gel sinus at base, somewhat pubescent on the 
es below ; or exceeding the in length. Pi alf an 
inch ong, snicimes several om the samo. ax aglaer i 
