190 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Neue Entdeck., vol. 2, p. 59 (1821). — Pt. Piedras, Johnston, no. 325, 
Aug. 6, and at Laguna Chica, Johnston, no. 327, Aug. 10, a much 
reduced form. Venezuela: Ernst, Sobra la flora y fauna, p. 223. 
Jamaica and Haiti. 
S. viRGiNicus (L.) Kunth, Rev. Gram., vol. 1, p. 67 (1829); Griseb., 
Fl. Brit. W. Ind., p. 533. Agrostis virginica L., Sp. pi., vol. 1, p. 63 
(1753). — Pt. Mosquito, Johnston, no. 326, Aug. 10. Venezuela: 
Tortuga, Ernst; Los Roques, Ernst. Widely distributed in tropical 
countries. 
Tragus Haller. 
T. RACEMOSUS (L.) Scop., Litrod., p. 73 (1777); Doell in Mart., 
Fl. Bras., vol. 2, pt. 2, p. 122. Cenchrus racemosus L., Sp. pi., vol. 2, 
p. 1049 (1753).— Reported by Urban (Symb. Ant., vol. 4, p. 80) as 
occurring on Margarita, a determination based on Miller & John- 
ston's material of 1901. 
Zea L. 
Z. Mays L., Sj). pi., vol. 2, p. 971 (1753); Griseb., Fl. Brit. W. 
Ind., p. 561; Doell in Mart., Fl. Bras., vol. 2, pt. 2, p. 31.— Cultivated 
in El Valle and Asuncion. 
CYPERACEAE. 
Cyperus L. 
C. distans L. f., Suppl., p. 103 (1781); Griseb., Fl. Brit. W. Ind., 
p. 565; Jacq., Ic. rar., vol. 2, pi. 299; Nees in Mart., Fl. Bras., vol. 2, 
pt. 1, p. 40; Urb., Symb. Ant., vol. 4, p. 112.— El Valle, Miller & 
Johnston, no. 182, Aug. 15. Venezuela: Ernst, Sobre la flora y 
fauna, p. 223. Widely distributed in tropical countries. 
Dichromena Michx. 
D. ciLiATA Vahl, Enum., vol. 2, p. 240 (1806); Urb., Symb. Ant., 
vol. 4, p. 121. Rhynchospora Vahliana Griseb., Fl. Brit. W. Ind., p. 
577 (1864).— El Valle, Miller & Johnston, no. 189, July 16; San 
Juan Mt., alt. 500 m., Johnston, no. 201, July 2. Venezuela: Ernst, 
Sobre la flora y fauna, p. 223. Distribution general from the Southern 
United States to Brazil. 
