384 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Eleusine virgata Pers. Syn. PI. 1 : 87. 1805. 



Leptostachys virgata Meyer, Prim. Fl. Esseq. 74. 1818. 



Oxydenia virgata Nutt. ; Hook. & Jacks. Ind. Kew. 2: 392. 1894. 



Leptochloa perennis Hack. Inf. Est. Centr. Agron. Cuba 1: 411. 1906. 



Culms in small tufts, tall, slender, strong and wiry, sparingly branching; 

 blades flat ; racemes commonly about 10 cm. long, lax, ascending, aggregated 

 toward the summit of the culm. 



Open ground and grassy slopes, Mexico and the West Indies to South America. 

 Originally described from Jamaica. Leptochloa perennis was described from 

 Cuba, the type being Baker 4617 from La Magdalena. To be found on probably 

 all of the West Indian islands. 



7. Leptochloa domingensis (Jacq.) Trin. Fund. Agrost. 133. 1820. 

 Cynosurus domingensis Jacq. Misc. 2: 363. 1781. 

 Rabdochloa domingensis Beauv. Ess. Agrost. 84, 176. 1812. 

 Leptochloa virgata gracilis Nees ; Griseb. Fl. Brit. W. Ind. 538. 1864. 

 Leptochloa virgata domingensis Link ; Griseb. Fl. Brit. W. Ind. 538. 1864. 

 Resembling the preceding, the panicles more elongate, the racemes more 



numerous. 



Open ground and grassy banks, Florida, Mexico, and the West Indies. Origi- 

 nal locality not given, presumably Santo Domingo. 



Bahamas (New Providence, Eleuthera), Cuba, Jamaica, Haiti, Santo Domingo, 

 Antigua, Saba, Guadeloupe, Martinique. St. "Vincent, and Trinidad. 



8, Leptochloa long'a Griseb. Fl. Brit. W. Ind. 538. 1868. 



Culms commonly 1.5 meters tall, geniculate below, robust ; blades 1.5 to 2.5 

 cm. wide, the long spreading, loosely flowered racemes mostly in distant fascicles. 

 Rich shady banks, Trinidad (San Fernando, Manzanilla), the type locality. 



86. GOUINIA Fourn. 



Spikelets few-flowered, short-pedicellate, appressed, in slender elongate 

 racemes, these paniculate; glumes and lemmas keeled, the lemmas bearded at 

 the base, awned. 



1. Gouinia virgata (Presl) Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 4: 10. 

 1897. 



Bromus virgatus Presl, Rel. Haenk. 1: 263. 1830. 



Festuca laxiflora A. Rich, in Sagra, Hist. Cuba 11: 318. 1850. 



Festuca fournieriana Hemsl. Biol. Centr. Amer. Bot. 3: 581. 1885, 



Gouinia polygama Fourn. Mex. PI. 2: 103. 1886. 



A scrambling perennial with slender wiry culms more than a meter long, 

 thin long flat blades, and large few-floM'ered panicles of few to several remote 

 divergent racemes with rather large spikelets. 



Rocky brushy slopes, Mexico and Province of Habana, Cuba. Originally de- 

 scribed from " Peru and Mexico," but the former locality probably an error. 

 Oouinia polygama was also described from Mexico. Festuca fournieriana is a 

 change of name based upon Fournier's then unpublished name. Festuca laa^i- 

 fiora was described from Habana. 



87. OPIZIA Presl. 



Plants monoecious (sometimes dioecious) ; pistillate spikelets in a single'loose 

 1-sided spike ; first glume minute or obsolete ; second glume nearly as long as the 

 floret ; fertile lemma sublndurate. broad, 3-awned, inclosing a broad palea with 



