384 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. T 



^Eleusinc virgata Pers. Syn. PI. 1: 87. 1805. 

 Lcptostachys virgata Meyer, Prim. Fl. Esseq. 74. JLSJiL 

 Oxydenia virgata Nutt. ; Hook. & Jacks. Ind. Kew. y/\ 392. 1894. & 5 ^ %<(j 

 Leptochloa perennis Hack. Inf. Est. Centr. Agron. Cuba 1 : 411. 1906. l ■ - V 

 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. 



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



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



Leptochloa virgatai 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 longa 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 laxifiora 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-flowered 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. 

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

 change of name based upon Fournier's then unpublished name. Festuca laxi- 

 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 subindurate, broad, 3-awned, inclosing a broad palea with 



