674 PLANT LIFE OF ALABAMA. 
ALABAMA: Tennessee Valley. Central Pine belt. Coast plain. Rich shady woods. 
Lauderdale County, Florence (M. C. Wilson). Tuscaloosa County (2. .1. Smith), 
Mobile County, Mount Vernon. Flowers lavender-blue; April. Not rare. 
Type locality: ‘‘ Hab. in Virginia.” 
Herb. Geol. Surv. Herb. Mohr. 
Amsonia ciliata Walt. Fl. Car. 98. 1788. NARROW-LEAVED AMSONIA, 
Tabernaemontana angustifolia Ait. Hort. Kew. 1:300. 1789. 
Amsonia angustifolia Michx. F]. Bor. Am. 1:121. 1803. 
Ell. Sk. 1:314. Chap. Fl. 360. Gray, Syn. Fl. N. A. 2, pt. 1:81. Coulter, Contr. 
Nat. Herb. 2: 262. 
Louisianian area. North Carolina to Flurida, west to Texas and Arkansas. 
ALABAMA: Central Pine belt to Coast plain. Dry light soil. Bibb County (Z. 4, 
Smith). Baldwin County, Bon Secour, loose sands, open pine woods. Flowers pale 
blue; June. Not frequent. 4 
Type locality: South Carolina. 
Herb. Geol. Surv. Herb. Mohr. 
APOCYNUM L. Sp. Pl. 1: 213. 1753. 
About 8 species, perennial herbs, southern Europe to temperate Asia. North Amer- 
ica, 5. 
Apocynum cannabinum L. Sp. Pl.1:213. 1753. 
CANADIAN Hemp. INDIAN Hemp. CuoctTaw Root. 
Ell. Sk.1:315. Gray, Man. ed. 6,338. Chap. Fl. 358. Gray, Syn. Fl. N. A. 2, pt.1: 
83. Wats. Bot. Calif.1:473. Coulter, Contr. Nat. Herb. 2: 262. 
Cusa. 
Carolinian and Louisianian areas. Ontario to New England, west to Minnesota, 
south through the Ohio Valley to the Gulf, from Florida west to Texas and Ari- 
zona, and from southern California to Oregon. 
ALABAMA: Coosahills. Central Prairie region to Coast plain. Damp grassy banks. 
St. Clair County, Shoal Creek. Dallas County. Baldwin County, Point Clear. 
Flowers paie purplish. Frequent. One and one-half to 2 feet high from a woody 
cylindrical nearly horizontal root. 
Economic uses: The root is the ‘Canadian hemp root” or ‘‘Apocynum” of the 
United States Pharmacopaia; the ‘squaw root” of the Choctaw Indians. 
Type locality: ‘‘Hab.in Canada, Virginia.” 
Herb. Geol. Surv. Herb. Mohr. 
TRACHELOSPERMUM Lemair, Jard. Fleur. 1: ¢. 61. 1851. 
Seven species, Japan, Hintalayan India. North America, 1. 
Trachelospermum difforme (Walt.) Gray, Syn. Fl. N. A. 2, pt.1: 85. 1878. 
; CLIMBING DOGbANE. 
Echites difformis Walt. Fl. Car. 98. 1788. 
Forsteronia difformis A. DC. Prodr. 8: 487. 1844. 
EU, Sk.1: 312. Gray, Man. ed. 6,338; Syn. FL. 2, pt.1: 85. Chap. 1.359. Coul: 
ter, Contr. Nat. Herb. 2: 263. 
Carolinian and Louisianian areas. Southern Virginia to Florida, west to Texas. 
ALABAMA: Tennessee Valley to Coast plain. Low, wet, alluvial banks, Morgan 
County, Cedar Plains. Walker County (£. A. Smith), Tuscaloosa, Montgomery, and 
Mobile counties. Flowers cream-color; June, July. Common. Trailing and climb- 
ing over bushes. Perennial. 
Tyve locality: South Carolina. 
Herb. Geol. Surv. Herb. Mohr, 
ASCLEPIADACEAE. Milkweed Family. 
ASCLEPIAS L. Sp. Pl.1: 214. 1753. 
Eighty-five species, perennial herbs, cooler temperate and tropical regions of both 
hemispheres. North America, 55. 
Asclepias tuberosa L. Sp. Pl.1:217. 1753. BUTTERFLY WEED. 
Ell. Sk. 1:325. Gray, Man. ed. 6, 340. Chap. Fl. 365. Gray, Syn. Fl. N. A. 2, pt.1: 
89. Coulter, Contr. Nat. Herb. 2: 265. 
Alleghenian, Carolinian, and Louisianian areas. Ontario; New England west to 
Minnesota, Dakota, and Colorado, south to Florida, Texas, and Arizona, 
