176 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
Annual (according to Ekman); culms slender, erect or decumbent 
at base, 15 to 60 cm tall; blades flat, 3 to 4 mm wide, more or less 
pilose; panicles long-exserted ; racemes usually 3 or 4, 1 to 8 cm long, 
the rachis very narrowly margined; spikelets 2 mm long; first glume 
obsolete or wanting; second glume about three-fourths the length of 
the spikelet; sterile lemma as long as the spikelet, this and the glume 
densely pubescent, the hairs, some as much as 1 mm long, exceeding 
the spikelet as a brushlike tip, fruit dark brown. 
Savannas and open rocky slopes, West Indies and Central America. 
Cusa: Santa Cruz de los Pinos, Ekman 17687. Pinar de Cajal- 
bana, Hkman 17309. Herradura, Tracy 9104. Habana, Léon 4785. 
Guanabacoa, Léon 4715; Hitchcock 23232. San Miguel de los Bafios, 
Léon 8874, 8875. Manacas, Léon 5843. Motembo mines, Léon 
8629. Zaza de Tunas, Léon 898. Sancti Spiritus, Léon 2790. 
Santiago de Cuba, Ekman 7700. 
Haiti: Pétionville, Ekman H 1351. Hinche, Ekman H 6176. 
Dominican Repusuic: Constanza, Ekman H 13903. 
Purerto Rico: Mayaguez, Chase 6271, 6277. Maricao, Chase 
6221. 
12. Digitaria pinetorum Hitchc., sp. nov.* 
Perennial; culms slender, cespitose, sometimes loosely so, erect, 
30 to 80 cm tall; sheaths glabrous or the lower pubescent; ligule a 
membrane 0.5 mm long; blades slender, flat or involute, mostly less 
than 2mm wide, minutely pubescent or glabrate ; racemes long-exserted, 
usually 1 or 2, sometimes 3, 4 to 10 cm long, sometimes as much as 
20 em, the rachis about 0.3 mm wide, with a very narrow margin, the 
spikelets in pairs or threes, the longer pedicels 2 mm long; spikelets 
lanceolate-elliptic, 2 to 2.2 mm long, densely appressed-pubescent 
between the nerves, the brownish hairs extending a little beyond the 
spikelet as a brushlike tip; first glume wanting; second glume slightly 
shorter than the spikelet, 3-nerved; sterile lemma as long as the 
spikelet, 5-nerved; fruit dark brown at maturity. 
Type in the United States National Herbarium, no. 1387398, col- 
lected in pinelands, Los Indios, towards La Siguanéa, Isla de Pinos, 
November 10, 1920, by E. L. Ekman (no. 12175)..: 
Pinelands, Cuba. 
Cusa: Herradura, Hitchcock 483, 484; Tracy 9077. Isla de Pinos, 
Ekman 12175; Britton and Wilson 15361, 15368. 
13. Digitaria ekmanii Hitchc., sp. nov.* 
Perennial; culms decumbent and rooting at base, glabrous, rather 
stout, 50 to 100 cm tall; sheaths compressed-keeled, glabrous or the 
lower papillose-hispid toward the base; ligule membranaceous, 
rather prominent, about 3 mm long; blades flat, finely pubescent, 5 
to 15 cm long, 2 to 4 mm wide; racemes 7 to 10, on an axis 2 to 3 cm 
long, erect or ascending, 7 to 12 cm long, the rachis triangular, 
scabrous, somewhat flexuous, 0.3 mm wide, the margins much nar- 
rower than the midrib; spikelets narrowly lanceolate, acute, glabrous 
48 Perennis; culmi graciles erecti 30-80 cm alti; laminae graciles, planae vel involutae 0.5-2 mm latae; 
racemi 1-2 (-3), 4-10 (-20) em longi, rachi 0.3 mm lata margine angustissimo; spiculae lanceolato-ellipticae- 
2-2.2 mm longae dense pubescentes; fructus brunneus. 
49 Perennis; culmi decumbentes 50-100 em longi; vaginae glabrae vel inferiores nonnihil papilloso-his- 
pidae; laminae planae tenuiter pubescentes 5-15 cm longae 2-4 mm latae; racemi 7-10 erecti vel ascendentes 
7-12 em longi, rachi 0.3 mm lata margine angustissimo; spiculae anguste lanceolatae acutae, glabrae 
2.5 mm longae; gluma prima nulla; gluma secunda spiculam equans; fructus pallidus. 
