100 Class V. Order II. 



below, branching repeatedly at top, red on the side exposed to 

 the sun. Leaves opposite, smooth on both sides, paler beneath, 

 ovate, acute, on short petioles. The flowers grow in nodding 

 cymes from the ends of the branches and axils of the upper 

 leaves, furnished with minute acute bractes. Calyx five cleft, 

 acute, much shorter than the corolla. Corolla white tinged with 

 red, monopetalous, campanulate, with five acute spreading seg- 

 ments. Stamens five, with very short filaments, and connivent, 

 oblong, arrow-shaped anthers, cohering with the stigma about 

 their middle. The nectary consists of five oblong, glandular 

 bodies alternating with the stamens. Germs two, ovate, conceal- 

 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.- -Road sides 



and borders of woods. June, July. Perennial. 



i 

 APOCYNUM 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. 



106. ASCLEPIAS. 

 ASCLEPIAS TUBEROSA. Butterfly weed. 



Bigelow, Medical Botany, PI. xxvi. 



Hairy ; leaves alternate, oblong lanceolate ; branch- 

 es 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, 



