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. 



Asdepias viridis Walt. Fl. Car. 107. 1788. 



Anantherix paniculata Nutt. Trans. Am. Phil. Soc. 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 Louisiauian 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 (E. A. Smith). Montgomery County. Flowers dark purplish 

 green; April, May. Not rare. 



Type locality: South Carolina. 



Herb. Geol. Surv. Herb. Mohr. 



AMPELANUS Raf. ; Britton, Bull. Torr. Club, 21 : 314. 1894. 

 (ENSLENIA Nutt. Gen. 1 : 164. 1818. Not Raf. 1817.) 



Ampelarms albidus (Nutt.) Britton, Bull. Torr. Club, 21: 314. 1894. SAND VINE. 



Enslenia albida Nutt. Gen. 1 : 165. 1818. 



Gray, Man. ed. 6, 343. Chap. Fl. ed. 3, 349. Gray, Syn. Fl. N. A. 2, 1 : 100. Britt. & 

 Br.Ilf.F1.3:16. 



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 

 (HerbJHltmore). 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. 



Cynaiichum palustre (Pursh) Heller, Cat. N. A. PI. 106. 1898. 



SEASIDE WINDING MILKWEED. 



Ceropegia palustris Pursh, Fl. Arn. Sept. 1 : 184. 1814. 

 Lyonia maritima Ell. Sk. 1 : 316. 1817. 

 Seutera maritima Decsne. in DC. Prodr. 8 : 590. 1846. 



Fweetoxicum palustre Gray, Syn. Fl. N. A. 2, pt. 1 : 102. 1878. 

 Ell. Sk. 1 : 316. Chap. Fl. 367. Gray, Syn. Fl. N. A. 2, 1. c. 



Coulter, Contr. Nat. 

 Herb. 2 : 269. Griseb. Fl. Brit. W. Ind. 418. " 



CUBA, BAHAMAS. 



Louisiauian a^ea. 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 gluina- 

 ceons marsh plants. 



Type locality: "In salt marshes, winding around Scirpi and Junci: Carolina. 

 Lyon." 



Herb. Geol. Surv. Herb. Mohr. 



VINCETOXICUM Walt. Fl. Car. 104. 1788. 

 (GONOLOBUS Michx. Fl. 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 : 103. Coulter, Contr. Nat. Herb. 

 2 : 269. 



