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. obtusiflora 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. ARENICOLA Johnston, Proc. Amer. acad. arts and sci., vol. 40, 
p. 694 (1905). — Along the trail from Porlamar to San Antonio, Miller 
d' 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., S\ii., 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. Aegypt.-Arab., p. 44 
(1775). — Juan Griego, Ernst. Venezuela: Colonia Tovar, Fendler, 
no. 937, 1854-55. All tropical countries. 
I. carnea Jacq., Enum. pi. Carib., p. 13 (1760); ,Griseb., Fl. Brit. 
