262 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
Sea beaches, extensively creeping, southern United States to 
Brazil; tropical regions of the Old World. 
Cusa: Habana, Léon 296, 563; Hkman 702, 16301. 
21. Panicum gouini Fourn., Mex. Pl. 2: 28. 1886. Mexico. 
Plants like P. repens in habit; culms 
on the average lower, rarely more than 
30 cm tall; panicle smaller, more densely 
flowered, commonly purple (fig. 216). 
Sea beaches, Alabama to Louisiana; 
Cuba; Veracruz. 
Cusa: Lomas de Camoa (prov. Ha- 
bana), at a small laguna, Hkman 17554. 
22. Panicum virgatum var. cubense 
FIGURE 216.—Panicwm gouini. Two Grisebs, (Cat. Ply Cubs 233) 1866p 
poe spikelet, and floret, X 10 Cuba, Wright a OBR. 
Panicum virgatum var. scorteum Lin- 
der, Rhodora 24: 14. 1922. Bermuda, 
Moore, 2850. 
Culms erect, slender, solitary or few 
in a clump, 1 to 2 m tall, from scaly 
creeping rhizomes; blades 10 to 60 cm 
long, 3 tol12 mm wide, gradually long- 
acuminate, flat; panicles open oblong, 
15 to 30 cm long; spikelets 2.8 to 3.2 mm 
long, glabrous, acute, the first glume about 
half as long as the spikelet (fig. 217). 
FIGURE 217.—Panicum virgatum var Coastal marshes and wet places, 
cubznse. Two views of spikelet, and Coastal Plain of the United States; Cuba. 
Oren eS Cusa: Remates, Ekman 11372, 11390, 
La Fé, Ekman 11322. Hanabana, 
Wright 3873. Laguna Jovero, Shafer 10927. Batabanéd, Ekman 901, 
12576; Baker in 1905; Palmer and Riley 1134; Hitchcock 153; Killip 
13609; Léon 5754,5755. Guanimar, Léon 7697, 14180, 14181. Guanf, 
Fernando 445. Baraguad, Hitchcock 23338. Ciénaga de Zapata, Léon 
9575. Guines, Léon 7262; Ekman 16939. 
23. Panicum altum Hitche. and Chase, 
Contrib: Wass Nath Elerpe it geek 
leo Ola eameannar 
Culms decumbent and straggling forming 
tangled masses, reedlike, as much as 6 
mm in diameter, ascending to a height of 
2 to 4 m, smooth and glaucous; blades 
flat, firm, 30 to 45.cm long, 8 to 15 mm 
wide; panicles ovoid, open, rather 
densely flowered, 20 to 30 cm long; 
spikelets 3.2 to 4mm long, turgid, glabrous; syicurz 218.—Penicum altum. 
first glume about two-thirds the length of  Spikelet and floret, x 10 (type). 
the spikelet (fig. 218). 
Sandy marshes or flats near the coast, British Honduras to Trinidad. 
Trintipap: Debadie, Broadway 5949. Port-of-Spain, [Hitchcock 
10053. Cedros, Hitchcock 10154, 10159. 
Toxsaco: Hitchcock 10233; Broadway 3068. 
