MANUAL OF THE GRASSES OF THE WEST INDIES 409 
This species is described by Humboldt, Bonpland, and Kunth,’ 
with Habana, Cuba, given as locality, under the name “Andropogon 
avenaceus Schrad.” This is evidently a misprint for A. arundinaceus 
Willd., as described by Schrader." In Cuba this is called ‘‘cafiuela’”’ 
and “hierba de Don Carlos.” 
2. Sorghum vulgare (L.) Pers., Syn. Pl. 1: 101. 1805. 
SORGHUM or SORGO. 
Holcus sorghum l., Sp. Pl. 1047. 1753. India. 
Andropogon sorghum Brot., Fl. Lusit. 1: 88. 1804. 
Sorghum dura Griseb., Fl. Brit. W. Ind. 560. 1864. 
Large broad-leaved annual, with a compact panicle of turgid per- 
sistent spikelets. 
Occasionally cultivated in the West Indies and sometimes spon- 
taneous in waste places or near fields. Widely cultivated in other 
parts of North America and in the Old World. In the English Islands 
it is often called ‘“‘Guinea corn’’; in Cuba it is called ‘‘millo.”’ 
There are numerous varieties. One variety, Sudan grass (S. vul- 
gare var. sudanense (Piper) Hitche.), is a comparatively slender form 
1 to 2 m tall, with a large open panicle, used for forage. Another 
variety, broomcorn, has a large erect or fan-shaped panicle with long 
naked branches, the spikelets crowded near the ends. 
112. SORGHASTRUM Nash, in Britton, Man. 71. 1901 
Spikelets in pairs, one nearly terete, sessile and fertile, the other 
wanting, only the hairy pedicel being present; glumes coriaceous, 
brown or yellowish, the first hirsute, the edges inflexed over the second; 
sterile and fertile lemmas thin and hyaline, the latter extending into 
a usually well-developed bent and twisted awn. Perennial, erect, 
rather tall grasses, with narrow flat blades and narrow terminal 
panicles of one- to few-jointed racemes. 
Awn straight or slightly bent, not strongly spirally twisted at base, shorter than 
the spikelet or sometimes a little longer eS eiEr oave Ae 1. §. SETOSUM. 
Awn geniculate, strongly spirally twisted at base, about 3 times as long as the 
Spilccletmemmn Samer aes i Ak Re a his Yes 2. S. STIPOIDES. 
1. Sorghastrum setosum (Griseb.) Hitche., Contrib. U. S. Natl. 
Herb. 12: 195. 1909. 
Sorghum parwflorum Desv.; Hamilt., Prodr. Pl. Ind. Occ.12. 1825. 
Not S. parwjflorum Beauy., 1812. Hispaniola. 
Andropogon setosus Griseb., Cat. Pl. Cub. 235. 1866. Cuba, 
Wright 3897. 
Andropogon francavillanus Fourn., Mex. Pl. 2: 56. 1886. Mexico. 
Sorghastrum francavillanum Hitchce., -Contrib. U.S. Natl. Herb. 12: 
195. 1909. 
Sorghastrum parviflorum Hitche. and Chase, Contrib. U. S. Natl. 
Herb. 18: 287. 1917. 
Tall erect tufted glabrous perennial with long, flat, or subinvolute 
blades and long lanceolate panicles with slender or subcapillary 
branchlets and peduncles and golden brown spikelets, the ultimate 
10 Novy. Gen. et Sp. 1: 189. 1816. 
11 F],. Germ. 1: 237. 1806. 
