MANUAL OF THE GRASSES OF THE WEST INDIES 301 
scabrous, especially beneath, as much as 50 cm long and 3 cm wide; 
panicles rather densely and evenly flowered, tapering toward the apex 
and often somewhat tapering at base, as much as 30 cm long and 4 or 
5 em wide (secondary panicles much smaller, sometimes only 5 cm 
long), the branches stiffly ascending or spreading, as much as 2 or 3 
em long and of about equal length except toward the summit, the axis 
densely villous; bristles 1 or 2 at the base of each spikelet, slightly 
flexuous, brownish, antrorsely scabrous, mostly 1 to 2 cm long, appear- 
ing secund on the branches after the fall of the spikelets; spikelets 
ovoid, 2 to 2.5 mm long, pale; fertile lemma strongly and rather 
coarsely cross-wrinkled (fig. 322). 
Open ground and brushy slopes at low and medium altitudes, West 
Indies and Central America 
to Peru and Argentina. 
PurrtTo Rico: Rio Pie- 
dras, Stevenson 3024; Chase 
6371. Humacao, Eggers in 
1881. Joyuya, Sintenis 
63357€ ‘cult.27)- 
TRINIDAD: Without lo- 
cality, Bot. Gard. Herb.3304; 
Crueger. 
Tosaco: Broadway4898. 
20. Setaria subtransiens 
Hitche. and Ekman, 
sp. noy.” 
Perennial; culms tufted, 
erect, slender, glabrous, 60 
to 100 cm tall, the nodes /|// 
glabrous, or the lower pu- /, 
bescent; sheaths glabrous, 
keeled, somewhat auricled 
at summit (the auricle on 
one side sometimes con- 
spicuous); ligule less than 
1 mm long, membranaceous 
below, densely ciliate 
above; blades mostly erect, (4% 
flat or involute, scabrous FIGURE 322.—Setaria vulpiseta, X 1 (Stevenson 3024). 
or puberulent on the upper 
surface, glabrous beneath, 10 to 20 cm long, 1 to 3 mm wide, grad- 
ually narrowed toward the base; panicles slender, interrupted, espe- 
cially below, attenuate at summit, 5 to 15 cm long, the branches 
appressed, short, the lower sometimes as much as 2 cm long, the axis 
scabrous; bristles mostly single below each spikelet, sometimes want- 
ing below some of the spikelets, appressed, about 5 mm long or some 
of them shorter; spikelets 2 to 2.5 mm long, somewhat oblique upon 
the short pedicel, lanceolate, acute, glabrous; first glume 3-nerved, 
about one-third aslong as the spikelet; second glume 5-nerved, about 
#0 Planta perennis; culmi caespitosi erecti graciles 60-100 cm alti; nodis glabris vel infimis pubescentibus; 
laminae erectae planae vel involutae, supra scabrae vel puberulentae, 10-20 cm longae 1-3 mm latae, a basi 
sensim angustatae; paniculae angustae, superne attenuatae, 5-15 cm longae, axi scabro; setae infra spiculas 
solitariae, circa 5 mm longae; spiculae lanceolatae acutae glabrae 2 mm longae; lemma fertile acuminatum 
obscure transversim striatum. 
60256—36——23 
