APOCYNACEAE. 



VOL. HI. 



3. Apocynum Milleri Britton. Miller's 

 Dogbane. Fig. 3378. 



Apocynum Milleri Britton, Manual 739. 1901. 



Stem slender, 3 high or less, the branches 

 spreading. Leaves oblong to ovate-lanceolate, 

 2i'-3l' long, pubescent beneath, the pubescent 

 petioles ii"-3" long; cymes small, terminal or 

 also in the upper axils, the pedicels \"-\\" 

 long; flowers nearly erect; corolla pinkish, 

 2j"-3" long, its rounded segments spreading, 

 much shorter than the tube, which is longer 

 than the ovate calyx-segments; follicles about 

 4' long. 



Dry soil, New York to Maryland and the Dis- 

 trict of Columbia. June-July. 



4. Apocynum cannabinum. L. Indian Hemp. 

 Amy-root. Fig. 3379. 



Apocynum cannabinum L. Sp. PI. 213. 1753. 



A. cannabinum glaberrimum DC. Prodr. 8: 439. 1844. 



A. nemorale G. S. Miller, Proc. Biol. Soc. Wash. 13 : 87. 



1899. 

 Apocynum urceolifer G. S. Miller, loc. cit. 



Root deep, vertical, soon branching. Stem exten- 

 sively branched, the branches erect or ascending, 

 glabrous or nearly so, more or less glaucous. Leaves 

 oblong, lanceolate-oblong or ovate-oblong, acute or 

 obtuse and mucronate at the apex, narrowed or 

 rounded at the base, glabrous above, sometimes pu- 

 bescent beneath, 2'-6' long, '-3' wide ; petioles i"-6" 

 long, or sometimes none; cymes dense; pedicels 

 short, bracteolate at the base ; calyx-segments about 

 as long as the tube of the greenish-white corolla; 

 corolla-lobes nearly erect ; follicles similar to those 

 of the preceding species. 



In fields and thickets, Connecticut to Wisconsin, Ala- 

 bama, Tennessee, Missouri and Kansas, perhaps extend- 

 ing farther north. Rheumatism-root. Wild cotton. 



5. Apocynum sibiricum Jacq. Clasping- 

 leaved Dogbane. Fig. 3380. 



A. sibiricum Jacq. Hort. Vind. 3: 37. pi. 66. 1776. 



A. hypericifolhim Ait. Hort. Kew. i : 304. 1789. 



A. cannabinum var. hybericifolium A. Gray, Man. 



365. 1848. 

 Apocynum album Greene, Pittonia 3: 230. 1897. 



Glabrous, pale green, often glaucous ; stem 

 l-2 high, the branches ascending. Leaves ob- 

 long, oblong-lanceolate to oval, i'-3' long, i'-ii' 

 wide, obtuse or acutish at the apex, cordate- 

 clasping, rounded, truncate, or most of the upper 

 narrowed at the base, short-petioled, or sessile, 

 the primary venation forming broad angles with 

 the midvein ; cymes many-flowered, dense to 

 loose ; pedicels mostly not longer than the flow- 

 ers, bracteolate ; calyx-segments about as long as 

 the corolla-tube, lanceolate, acute ; corolla-lobes 

 nearly erect ; follicles 2'-3i' long. 



Mostly along streams, Quebec to British Columbia, 

 Long Island, Ohio, Kansas and New Mexico. St. 

 John's-dogbane. June-Aug. 



