MANUAL OF THE GRASSES OF THE WEST INDIES 67 
1. Deschampsia domingensis Hitchc. and Ekman, sp. nov.” 
Culms tufted, erect, 60 to 90 cm tall, from slender creeping rhi- 
zomes; sheaths glabrous, pale, somewhat papery; ligule membra- 
Naceous, acuminate, 8 mm long; shorter on the innovations; blades 
folded or involute, glabrous, elongate, laxly upright, flexuous, mostly 
less than 1 mm wide when folded; panicle open, 10 to 20 cm long, 
the branches capillary, flexuous, scabrous, spreading, usually naked 
for half their length or more, the lower as much as 10 em or more 
long; spikelets on capillary pedicels, somewhat aggregate toward 
the ends of the branchlets; callus hairs 0.5 to 2 mm long, rather 
scant, the rachilla pilose; glumes 5 to 6 nim long; lemmas 2.5 to 
4 mm long, thin, 4-toothed at summit, the teeth acuminate, the 2 
outer 0.5 mm long; awn from near the base of the lemma, geniculate, 
the straight segment above the bend about 5 mm long; palea as long 
as the lemma (fig. 37). 
FIGURE 37.—Deschampsia domingensis. Portion of panicle, X 1; spikelet, x 5 (type). 
Type in the United States National Herbarium, no. 1502064, 
collected in moist pinelands, in Los Vallecitos del Yaque, prov. Azua, 
Cordillera Central, Dominican Republic, altitude about 2,500 m, 
October 2, 1929, by E. L. Ekman (no. H 13633b). 
This species in habit resembles D. caespitosa (L.) Beauy., but 
differs in the slender rhizomes, the flexuous panicle branches, the 
insertion of the bent exserted awn at the base of the lemma, and in 
other details. 
Dominican ReEpustic: Los Vallecitos del Yaque, Ekman H 13633, 
H 13633b. Valle Nuevo, altitude 2,400 m, on rocks at a brook, 
Ekman H 13747. Sabana Alta, altitude 2,935 m, moist pine forest, 
Ekman H 13802. San Juan, Lomas de la Mediania, altitude 2,500 
m, at the headwaters of a brook, “common above 2,500 m’’, Ekman 
H 13554. 
17 Culmi caespitosi erecti 60-90 em alti, e rhizomatibus gracilibus; ligula 8 mm longa; laminae involutae 
graciles elongatae flexuosae circa 0.5 mm crassze; panicula patens 10-20 em longa, ramis capillaribus flexu- 
osis scabris patentibus infra nudis; glumae 5-6 mm Jongae; lemmiata 2.5-4 mm longa, pauium supra basin 
arisiam geniculatum emittens, aristae parte recta circa 5 mm longa. 
