320 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
lets and the description states that the fruit is dark, both these characters 
indicating P. virgatum. In any case Grisebach’s varietal name would be, be- 
cause of P. stramineum Nash, untenable for a species. Paspalum secans is 
based on the Porto Rico collections; the Jamaica form may possibly be dis- 
tinct. 
Hitchcock’ refers this species to P. virgatum schreberianum Fliigge, de- 
scribed from South America, and Nash? to P. schreberianum. We have not 
seen Fltigge’s specimen, but his description, “spikes about thirty, the rachis 
margin subpilose, spikelets glabrous,” applies to our species only in the last 
character. Furthermore P. secans is not known from the continent, but from 
the West Indies only. 
Bahamas (Inagua, New Providence), Cuba, Jamaica, Porto Rico (frequent 
throughout), St. Croix, and Antigua. 
54. Paspalum millegrana Schrad. in Schult. Mant. 2: 175. 1824. 
Paspalum underwoodii Nash, Bull. Torrey Club 30: 375, 1903. 
In large strong-rooted clumps, commonly 1.5 meters tall; lower sheaths 
nodulose, much overlapping; blades partially conduplicate, narrower, stiffer, 
and more scabrous than those of P. virgatum, often finely pubescent on the 
upper surface; racemes usually numerous, rather aggregated, ascending, the 
glabrous paired crowded spikelets usually glaucous-purplish or lead color, 2 to 
2.2 mm. long, obovate-suborbicular, sometimes almost obcordate and apiculate. 
Open mostly moist grounds, Bahanras and the Greater Antilles to southern 
Brazil. Originally described from Brazil. The type specimen has not been 
examined, but this is the only Brazilian species known to us answering the de- 
scription, the characters “ obovate-orbicular, glabrous, densely imbricate” ap- 
plying particularly well to the spikelets of this species. Paspalum underwoodii 
was described from Porto Rico, Underwood & Griggs 149 being the type. 
Bahamas (New Providence), Cuba, Jamaica, Porto Rico (common through- 
out), Trinidad, and Tobago. 
55. Paspalum densum Poir. in Lam. Encycl. 5: 32. 1804. 
Like Paspalum millegrana in habit, the culms and sheaths more lush and in 
drying more strongly nodulose; racemes 4 to 6 em. long, very numerous, aggre- 
gated into an elongate-pyramidal panicle, the rachises conspicuously pilose, the 
light brown, glabrous, densely crowded spikelets 1.8 to 2 mm. long, nearly as 
broad. 
Wet savannas and open wet ground, West Indies, Panama, and Venezuela. 
Originally described from Porto Rico. 
Cuba (Pinar del Rfo, and Hanfibana), Jamaica (parishes of Clarendon and 
St. Catherine), Porto Rico (south and west of San Juan Bay), Guadeloupe, and 
western Trinidad. 
56. Paspalum coryphaeum Trin. Gram. Pan. 114. 1826. 
An erect branching nearly glabrous perennial, 1 to 2 meters tall, the long flat 
blades purplish-glaucous, especially beneath: racemes numerous, ascending or 
finally arching, 5 to 10 cm. long, somewhat aggregated: rachis very slender 
with a long tuft of hairs at the base, the light brown elliptic crowded spikelets 
about 2 mm. long, the glume villous, the sterile lemma glabrous or obscurely 
pubescent toward the apex; panicles of the branches much smaller than the 
primary ones. 
Savannas, western Trinidad to Brazil. Originally described from Brazil. 
*Contr, U. S. Nat. Herb. 12: 206. 1909. 
*Fl. N. Amer. 17: 190, 1912, 
