JOHNSTON: FLORA OF MARGARITA ISLAND. 249 



Sarcostemma R. Br. 



S. GLAUCA HBK., Nov. gen. et sp., vol. 3, p. 194, pi. 229 (1818). 



— Santa Ana, Ernst. Venezuela: near La Guaira, Maiqueti, and 

 Cabo Blanco, HBK., /. c. 



CONVOLVULACEAE. 



CUSCUTA L. 



C. AUSTRALis R. Br., Prod., p. 491 (1810). C. obtmiflora HBK., 

 Nov. gen. et sp., vol. 3, p. 122 (1818); Mart., Fl. Bras., vol. 7, p. 380, 

 pi. 127; Griseb., Fl. Brit. W. Ind., p. 476.— Santa Ana, Ernst. Dis- 

 tributed from Florida to Peru. 



EVOLVULUS L. 



E. AREXICOLA Johnston, Proe. Amer. acad. arts and sci., vol. 40, 

 p. 694 (1905). — Along the trail from Porlamar to San Antonio, Miller 

 & Johnston, no. 218, Aug. 2. Endemic. 



E. FiLiPES Mart., Flora, vol. 24, pt. 2, Beibl., p. 100 (1841).— El 

 Valle, Miller & Johnston, no. 16, Aug. 9. Further distribution, 

 Brazil. 



E. iNCANUS Pers., Syn., vol. 1, p. 288 (1805). E. sericeus Sw., 

 Prod. veg. Ind. Occ, p. 55 (1788); Griseb., Fl. Brit. W. Ind., p. 475. 



— Santa Ana, Ernst. Distribution general in tropical America. 



E. MUCRONATUS Sw. ex Wikstr., Vet. akad. handl. Stockh., p. 61 

 (1827); Griseb., Fl. Brit. W. Ind., p. 475.— Santa Ana, Ernst. 

 Distributed from Porto Rico to Peru. 



Ipomoea L. 



I. Batatas Poir.,Encycl., vol. 6, p. 14 (1804); Griseb., Fl. Brit. W. 

 Ind., p. 468. Cultivated, according to Ernst. Commonly cultivated 

 in warm climates. 



I. PES-CAPRAE (L.) Sweet, Hort. suburb. Lond., p. 35 (1818); 

 Griseb., Fl. Brit. W. Ind., p. 470. Convolvulus pes caprae L., Sp. pi., 

 vol. 1, p. 159 (1753). Ipomoea biloba Forsk., Fl. Aeg>q3t.-Arab., p. 44 

 (1775). — Juan Griego, Ernst. Venezuela: Colonia Tovar, Fe?7dler, 

 no. 937, 1854-55. All tropical countries. 



I. CARNEA Jacq., Enum. pi. Carib., p. 13 (1760); Griseb., Fl. Brit. 



