238 MISC. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
The base of the type specimen and of Ekman H 13603 suggest that 
the plants were growing in deep humus, such as is often found in open 
ground above timberline. A note by Dr. Ekman on H 13603 reads: 
“Silt flats, about 1,950 m, very abun- 
dant. One of the very few plants 
characteristic of the high mountain | 
eroup west of Constanza. As a rule 
all plants found in this region grow 
also in the Los Valles region.”” No.H 
13542 is said to form vast colonies. 
Known only from Cordillera Central, 
prov. Azua, Dominican Republic. 
Dominican RepusBiic: Loma Tina, 
Hkman H 13712. San Juan, Arroyo 
del Oro, Ekman H 13542; Lomas de 
la Mediania, Ekman H 13603. 
70. Paspalum convexum Humb. and 
Bonpl., in Fliigge, Monogr. 
Pasp. 175. 1810. Mexico. 
Paspalum hemicrypium Wright, 
An. Acad. Cien. Habana 8: 204. 
FIGURE 191.—Paspalum convecum. Panicle, 1871. Cuba, Wright 3847. 
(AES yaa Tufted leafy branching usually 
spreading annual; culms usually 20 
to 40 em tall; blades flat, ratherlax, 5 to 20 cm long, 3 to 11 mm wide; 
racemes usually 2 or 3, thick, 2 to 4 cm long; spikelets 2.2 to 3 mm 
long, obovate-suborbicular, appressed-pubes- 
cent to glabrous; fruit dark brown (fig. 191). 
Open ground, cultivated and waste places, 
Mexico to Brazil; Cuba and Trinidad, proba- 
bly introduced. 
Cusa: El Salado, Wright 3847. Gamboa, 
Ekman 15008. 
Trinipap: La Brea, Broadway 4983. Pitch 
Lake, Broadway 9012}. 
71. Paspalum melanospermum Desv., in Poir., 
ay Weta, Winey Swjo, 422 BSH Wel, 
Cayenne. 
Paspalum oliwaceum Hitche. and Chase, 
Contub: WIS. Nath rerby WS sie 19 er. 
Guadeloupe, Duss 3915. 
Leafy nearly glabrous annual; culms 40 to 
70 cm long, ascending from a decumbent base; 
blades lax, flat, 10 to 15 cm long, 5 to 10 mm 
wide; racemes 2 to 7, arcuate-spreading, 1 to 6 
cm long, the slender subflexuous axis 4 to 8 cm 
long; spikelets 2 mm long, obovate, brown; 
fruit dark brown (fig. 192). FOU RHA0e- SP Lene 
Open moist ground, northern South anospermum. Panicle, x 1 
America; Guadeloupe and Martinique, proba- Horat, ¢ 10 (Duss 3915). 
bly introduced. 
Lrnwarp Isuanps: Guadeloupe, Duss 3915; Husnot 76 in part. 
WINDWARD Isutanps: Martinique, Duss 4012; Hitchcock 16445. 
