134 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
Chloris barbata Swartz, Fl. Ind. Occ. 1: 200. 1797. Based on 
Andropogon barbatum L. Mant. 2: 302. 1771. 
Chloris paraguaiensis Steud., Syn. Pl. Glum. 1: 204. 1854. Para- 
guay. 
Tufted annual, 30 to 75 cm tall; culms and sheaths strongly com- 
pressed ; blades long, lax; spikes about 10, usually flexuous, commonly 
purplish- tinged, 4 to 6 cm long; first lemma 2 mm long, the awn 
about 6 mm long; rudiment of 2 triangular-obtuse lemmas about 1 
mm long, the awn of the first about as long as that of the fertile lemma, 
the awn of the second short (fig. 83). 
Waste places, a common weed at low altitudes, Mexico and the 
West Indies to Argentina. Type grown in the Berlin Botanic Garden 
from seed said to come from ‘‘California,’”’ probably from Mexico. 
Probably to be found on ail the West Indian islands. 
13. Chloris virgata Swartz, Fl. Ind. Occ. 1: 208. 1797. Antigua. 
FEATHER FINGERGRASS. 
Chloris elegans H. B. K., Nov. Gen. et Sp. 1: 166. pl. 49. 1816. 
Mexico. 
Culms ascending, 20 to 40 cm tall, scarcely compressed, the upper 
sheaths slightly inflated, glabrous in the throat; spikes mostly 5 or 
6, suberect, somewhat flexuous in age, 3 to 5 em long; fertile lemma 
3mm long, broadest above the middle, villous on the keel to a little 
below the summit, and long pilose on ‘the margins near the tip, the 
awn 5 to 8 mm long; rudiment a little more than 2 mm long gradu- 
ally broadened to an oblique truncate apex, the awn somewhat shorter 
than that of the fertile lemma (fig. 84). 
Open ground, fields, and waste places, the West Indies and south- 
western United States to Argentina; a common weed in warm coun- 
tries of both hemispheres. 
Cupa: Candelaria, Hkman 17595. Herradura, Hitchcock 249. 
Campo Florido, Léon 3461. Vento, Shafer 483; Baker 1183. Mazarra, 
Baker 4023. Soledad, Hitchcock 23336. Fomento, Léon 6434. Sancti 
Spiritus, Léon 858. Corojo, Léon 3964. Bayamo, Shafer 12394. 
Haiti: Port-au-Prince, Hkman H 9098; Hitchcock 19879. Artibonite 
Valley, Cook, Scofield, and Doyle 213. L’Arcahaie, Ekman H 9054. 
Dominican Repusuic: Santiago, Hkman H 16020. 
LEEWARD IsuaANpDs: Barbuda, Danforth 5. Guadeloupe, Stehlé 108. 
55. TRICHLORIS Fourn., Mex: Pl. 2: 142..°1886 
Spikelets, 1- to few-flowered, nearly sessile, in two rows along one 
side of a continuous slender rachis, the rachilla disarticulating above 
the glumes and prolonged behind the uppermost perfect floret, bear- 
ing a reduced, usually awned floret; glumes unequal, acuminate or 
short-awned, the body shorter than the lower lemma; lemmas narrow, 
3-nerved, the marginal nerves sometimes pubescent, these and the 
midnerve extending into awns, the central long and slender, the 
lateral often much shorter. Erect, slender, tufted perennials, with 
flat blades and numerous erect or ascending spikes, aggregate but 
scarcely digitate at the summit of the culms. 
