394 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
18. Andropogon bicornis L., Sp. Pl. 1046. 1753. Brazil, Jamaica. 
Anatherum bicorne Beauv., Ess. Agrost. 128. 1812. 
Saccharum bicorne Griseb., Abh. Ges. Wiss. Géttingen 7: 266. 
Sai 
Sorghum bicorne Kuntze, Rev. Gen. Pl. 2: 791. 1891. 
Robust tufted perennial; culms mostly 1 to 2 m tall; blades 2 to 
5 mm wide, scabrous on the margin; inflorescence large, corymbose, 
of delicate flexuous racemes 2 to 3 cm long, whitish or tawny, feath- 
ery with hairs as much as 5 mm long; 1, sometimes 2, of the uppermost 
pedicellate spikelets larger than the fertile ones, the other pedicellate 
spikelets rudimentary. 
Grassy hills and banks, southern Mexico to Brazil and widely 
distributed in the West Indies. Probably to be found on all the 
islands from Greater Antilles southward. In West Indies called 
foxtail and sometimes ‘‘ridging grass.”’ 
19. Andropogon leucostachyus H. B. K., Nov. Gen. et Sp. 1: 187. 
1816. Venezuela. 
Anatherum domingense Roem. and Schult., Syst. Veg. 2: 809. 1817. 
Santo Domingo. 
Andropogon domingensis Steud., Nom. Bot. 45. 1821. 
Andropogon leucostachyus subvar. subvillosus Hack.,in DC., Monogr. 
Phan. 6: 420. 1889. Brazil. 
Sorghum leucostachyum Kuntze, Rev. Gen. Pl. 2: 792. 1891. 
Slender, densely tufted erect perennial; culms 30 to 50 cm tall; 
blades 1 to 3 mm wide, with a deeply impressed midvein; ligule about 
2 mm long; racemes 2 or 38, whitish, 1.5 to 3 cm long, on slender 
exserted peduncles, the spikelets obscured by the copious long silky 
hairs. Foliage villous in some of the Trinidad specimens, the sub- 
var. subvillosus Hack. 
Cliffs and grassy slopes, West Indies and southern Mexico to 
Brazil. 
Cusa: Sumidero, Shafer and Léon 13613, 13717. Herradura, Tracy 
9046. Consolacién del Sur, Palmer and Riley 480. Madruga, Léon 
3459. Minas, Léon 6222. Banao Mountains, Léon 5407. Placetas 
del Sur, Léon 6428, 6431. Sancti Spiritus, Léon 827. Sancti Spiritus 
Mountains, Léon 6529. Pasto Estancia, Shafer 1639, 1681. Loma 
del Gato, Léon 10324. Isla de Pinos, Britton and Wilson 15110; 
Hkman 12208. 
JAMAICA: Port Antonio, Fredholm 3334. Bull Head Mountain, 
Nitcheock 9546. Barican, Hitchcock 9577. Mount Hybla, Harris 
12458. Hollis Savanna, Harris 12244. Below Content Gap, Harris 
11349. 
Harti: Aux Cayes, Ekman H230. Furcy, Leonard 4312; Buch 1573. 
Marmelade, Leonard 8242, 8258. Plaisance, Leonard 9348. Caille 
la Croix, Leonard 7883. Pétionville, Ekman H 1746. San Michel, 
Miller 301; Sweet in 1925. 
Dominican Rerpusuic: Jarabaco, Hggers H 2321 Gn part). Mon- 
cion, HKkman H 12769. 
Puerto Rico: Adjuntas, Sintenis 4481. Mayaguez, Heller 4396; 
Britton and Marble 654; Britton and Hess 2813; Chase 6163, 6819. 
Holm 76. San Juan, Chase 6366, 6383, 6636, 6776; Sein 322. Cayey, 
Chase 6733. Maricao, Chase 6216; Britton and Cowell 4267; Britton, 
