140 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
as 2 mm wide; inflorescence 3 to 10 cm long; spikes mostly 3 to 7, 
ascending or spreading, 1 to 2 cm long, oblong; spikelets mostly 4 to 
8, rather closely imbricate; awns 3 to 8 mm long (fig. 88). 
Cusa: Vicinity of Habana, Léon 298, 861, 3479, 4147, 4792, 8980; 
Hitchcock 460; Curtiss 546 (in part); Ekman Boe ime 128 Triscornia, 
Hitchcock 452: Tracy 9088; Van Hermann 1873. Guanabacoa, 
Hitchcock 23244: Léon 9124. Sancti Spiritus, Shafer 12060. Guan- 
tinamo, Britton 2148. Santiago de Cuba, Ekman 7913. Bayamo, 
Shafer 12386. Eastern Cuba, Wright 739. Isla de Pinos, Britton 
and Wilson 15155. Without locality, Wright 3815. 
Haiti; Port-au-Prince, Ekman H 9108; Hitchcock 19881; Buch 
2042. EKtang, Leonard 3508. Hinche, Cook, Scofield, and Doyle 
143, 145. St. Michel’ de l’Atalaye, Leonard 7111, 7336, :7789. 
Ennery, Leonard 8809. Gros-Morne, Leonard 9987. 
Miragoane, Eyerdam 575. Mole-St.-Nicolas, Leonard 
13219. Jean Rabel, Leonard 12562. St. Marc, Leonard 
2880. St. Roc, Buch 1831. 
Dominican Rerusuic: Nigua, Faris 555. Guayubin, 
Abbott 9384. Santiago, Raunkiaer 939; Ekman H 16495. 
Contanza, Tuerckherm 3275. Maniel de Ocoa, Tuerck- 
heim 3600. Without locality, Wright, Parry, and Brum- 
mel in 1871. 
Purrto Rico:.Bayamon, Stahl 2. Mayaguez, Chase 
6268, 6301; Holm 117; Britton and Cowell 4074. Maricao, 
Chase 6227. Ponce, Chase 6327, 6484, 6485%; Britton 
and Cowell 1321; Britton, Cowell, and Brown 5382; Britton 
and Marble 1778. Boqueron, Chase 6504. Punta 
Melones, Brition and Brown 4648. San German, Britton 
and Cowell 4017. Cayey, Sintenis 2203. Arroyo, Sintenis 
2267. Coamo, Britton and Brown 5947; Sintenis 1959. 
Palo Seco, Hioram 837. 
5. Bouteloua disticha (H. B. K.) Benth., Jour. Linn. Soc. 
Bot. 19:°105. 1881. 
FIGURE 88.— 
Bouteloua Polyodon distichum H. B. K. Nov. Gen. et Sp. 1: 175. 
eset ge DL oom SiG a euador: 
(Léon 861). © Annual; culms widely spreading or strag goling, 20 to 
100 cm long: blades flat, more or less pilose on the 
margins and upper surface, 2 to 5 mm wide; spikes several to many, 
sometimes 30 or more, approximate on an axis 10 to 20 cm long, 5 to 
10 mm long (excluding awns); spikelets mostly 2 to 5 in each spike; 
awns 5 to 10 mm long. 
Open ground and dry hills, Ecuador and northern Peru; Cuba, 
probably introduced. 
Cusa: Vicinity of Habana, Hkman 13478; Léon 299, 749, 12467; 
Van Hermann 320; Wilson and Léon 11590; Curtiss 537; Wilson 9160; 
Johnston 1108; Hitchcock 23222. 
57. OPIZIA Presl, Rel: Haenk. 1: 293: plhy4 1 aiek a lieoo 
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, enclosing a broad palea with keels crested above, the rachilla 
