106 CLASS V. ORDER II. 



ed by the anthers. Stigma thick, roundish, agglutinated to the 

 anthers. The fruit is a pair of slender linear-lanceolate follicles, 

 containing numerous imbricated seeds each crowned with a long 

 pappus, and attached to a slender central receptacle. These are 

 often found with their beaks caught in the arrow shaped anthers 

 of the flowers. The root is very bitter and has emetic proper- 

 ties. — Road sides and borders of woods. — June, July. — Perennial. 



Apocvn'UiM cannabinum. L. Indian Hemp. 



Stem erect; leaves oblong-ovate, pale and downy 

 beneath ; segments of the corolla erect. 



Different from the preceding in its narrower leaves, and small- 

 er, straighter flowers. Stem erect, smooth, branching. Leaves 

 opposite, on short petioles, oblong-ovate, acute, glabrous above, 

 paler and downy underneath. Cymes terminal, the peduncles 

 smooth or downy, and furnished with linear bractes. Calyx seg- 

 ments acute. Corolla small, greenish, its segments obtuse and 

 erect. The fibres of the bark are strong, like hemp. — Woods 

 and meadows. — July. — Perennial. 



115. ASCLEPIAS. 

 AscLEPiAS TuBERosA. Butterfly tceed. 



American Medical Botany, PI. 2G. 



Hairy; leaves alternate, oblong, lanceolate; branches 

 cymose. 



The root of this plant is large, fleshy, branching, and often 

 somewhat fusiform. It is only by comparison with the other spe- 

 cies that it can be called tuberous. The stems are numerous, 

 growing in bunches from the root. They are erect, ascending, 

 or procumbent, round, hairy, green or red. Leaves scattered, 

 the lower ones pedunculated, the upper ones sessile. They are 

 narrow, oblong, hairy, obtuse at base, waved on the edge, and in 

 the old plants sometimes revolute. The stem usually divides at 

 top into from two to four branches, which give off crowded um- 

 bels from their upper side. The involucrum consists of nume- 

 rous short subulate leaflets. Flowers numerous, erect, of a 

 beautifully bright orange color. Calex much smaller than the 

 corolla, five parted, the segments subulate, reflexed, and conceal- 



