MILKWEED FAMILY. 677 
ASCLEPIODORA Gray, Proc. Am. Acad. 12:66. 1876. 
Two species, perennials, Atlantic North America, southwestward. 
Asclepiodora viridis (Walt.) Gray, Proc. Am. Acad. 12: 66. 1876. 
PANICULATE ASCLEPIODORA. 
Asclepias viridis Walt. Fl. Car. 107, 1788. 
Anantherix paniculata Nutt. Trans. Am. Phil. Soe. 5: 203. 1837. 
Acerates paniculata Decsne. in DC. Prodr. 8:521. 1844. 
Ell. Sk.1:327. Gray, Man. ed. 6, 339. Chap. Fl. 366. Gray, Syn. FL N. A. 2, pt. 
1:89. Coulter, Contr. Nat. Herb. 2: 265. 
Carolinian and Louisianian areas. Southern Illinois, southern Missouri, Arkan- 
sas, and from central ‘Tennessee south to Florida, west to Louisiana, Texas, New 
Mexico, and Utah. 
ALABAMA: Central Prairie region. Sunny dry places, borders of fields, and pas- 
tures. Dallas County (/. 4. Smith), Montgomery County. Flowers dark purplish 
green; April. May. Not rare. 
Type locality: Sonth Carojina, 
Herb. Geol. Surv. Herb. Mohr. 
AMPELANUS Raf.; Britton, Bull. Torr. Club, 21: 314. 1894. 
(ENSLENIA Nutt. Gen. 1:164. 1818 Not Raf. 1817.) 
Ampelanus albidus (Nutt.) Britton, Bull. Torr. Club, 21:314. 1894. Sanp VINE, 
Enslenia albida Nutt. Gen. 1:165. 1818. 
Gray, Man. ed. 6,343. Chap, FI. ed. 3, 349. Gray, Syn. FIN. A.2,1:100. Britt. & 
Br. I]. Fl. 3:16. 
Carolinian and Louisianian areas. Southern Pennsylvania, Ohio Valley, Missouri, 
and Kansas; south from Kentucky to upper Georgia, northern Mississippi, Texas, and 
Arkansas. 
ALABAMA: Tennessee Valley. Banks of streams, Jackson and Stevenson counties 
(Herb Biltmore). Rare. 
Type locality: ‘‘Near Shepherdstown, on the gravelly banks of the Potomac, 
Virginia. * * * On the high sandy banks of the river Scioto, etc., also near 
Cincinnati.” 
Herb. Biltmore. 
CYNANCHUM L. Sp. Pl. 1:212. 1753. 
About 100 species, warmer regions of North and South Africa, Asia, West Indies, 
and America, Atlantic America, 2. Southern. 
Cynanchum palustre (Pursh) Heller, Cat. N. A. Pl. 106. 1898. 
SEASIDE WINDING MILKWEED. 
Ceropegia palustris Pursh, Fl]. Am. Sept. 1: 184. 1814. 
Lyonia maritima Ell. Sk.1:316. 1817. 
Seutera maritima Decsne. in DC. Prodr. 8:590. 1846, 
Vineetoxicum palustre Gray, Syn, Fl. N. A. 2, pt. 1: 102. 1878, 
Ell. Sk. 1:316. Chap. Fl. 867. Gray, Syn. Fl. N. A. 2, lL. ec. Coulter, Contr. Nat. 
Herb. 2:269. Griseb. I'l. Brit. W. Ind, 418. 
CuBa, BAHAMAS. 
Louisianian area. Seashore of South Carolina to Florida, west to Texas. 
ALABAMA: Littoral region. Mobile and Baldwin counties, salt marshes. Flowers 
greenish; June, July. Abundant. Perennial, twining around the coarser gluma- 
ceous marsh plants. 
Type locality: ‘‘In salt marshes, winding around Scirpi and Junci: Carolina. 
Lyon.” 
Herb. Geol. Surv. Herb. Mohr. 
VINCETOXICUM Walt. I'l. Car. 104, 1788, 
(GoNOLOBUS Michx. FI. Bor, Am. 1:119. 1803.) 
About 65 to 70 species, trailing or winding perennials; West Indies, South America, 
Mexico. Atlantic North America, chiefly Southern, about 17. 
Vincetoxicum gonocarpus laevis (Michx.) Britton, Mem. Torr. Club, 5: 266, 1894, 
SMOOTH ANGLE-POD. 
Gonolobus laevis Michx. Fl. Bor. Am. 1:119. 1803, 
Gray, Man. ed. 6, 344. Gray, Syn. Fl. N. A. 2, pt. 1:108. Coulter, Contr. Nat. Herb. 
2: 269. 
