28 



FIELD COLUMBIAN MUSEUM BOTANY, VOL. III. 



Paspalum lentiginosum Presl. in Rel. Haenk. 1:218. 



Panicle exserted, of 3-12 racemes; axis 5-15 cm. long, glabrous,. 



internodes .5-6 cm., racemes spreading or ascending, 2-10 cm. long, 



3 mm. wide, the upper approximate, some- 

 times subfasciculate, the racemes rarely 

 compound, rachis hispidulous on the mar- 

 gins, a few long white hairs at the axils. 

 Spikelets in pairs on scabrous pedicels 

 i. 2 xi. 4 mm., obovate-orbicular, obtuse. 

 Empty glumes 2, equal, 3-nerved, speckled 

 with purplish brown, hirsute with short, 

 stiff, white, gland-tipped hairs, first glume 

 orbicular, second oval; fruiting glumes 

 i x 1.2 mm., stramineous, orbicular with 

 a narrowed base, smooth and shining. 



Grain pale brown, orbicular, .8x.g mm.; in section concavo-convex. 

 Hab. Merida, July n, 1865, Schott 597 ; common on old fields 



about Izamal, 30 inches high, Sept. , Gaumer 852 (Paspalum panicu- 



latum Field Col. Mus. Bot. 1:288), Chichankanab 1461, 1523, 2464. 



Paspalum oricolum sp. nov. 



Panicle included at -base or finally exserted, of 3-7 racemes; axis 

 5-20 cm. long, glabrous, internodes 1-5 cm. ; racemes ascending or 

 spreading, 3-8 cm. long, 4 mm. wide, the lower rarely long-pedun- 

 cled; rachis scabrous on the margins, a few long white hairs at the 

 axils. Spikelets in pairs on scabrous pedicels, 1.6-2.4 mm., fus- 

 cous, obovate, subacute. Empty glumes 3, the first triangular, ciliate, 

 on the lower of the pair of spikelets %-yz the length of the spike- 

 let, on the upper spikelet minute; second and third glumes subequal, 

 5-nerved, papillo-hirsute and speckled with dark brown; second 

 broadly ovate, apiculate; third ovate, blunt; fruiting glumes 1.3x2.4 

 mm., stramineous, obovate, subacute, papillo-striate. Grain pale 

 brown, oblong with narrowed base, 1x1.5 mm. ; in section sub-plano- 

 convex. Plant perennial, branching at the base, 2.5-7 dm. high: 

 culms erect, glabrous; sheaths 

 usually longer than the inter- 

 nodes, ciliate on the margins; 

 ligule membranaceous, .5-1 mm. 

 long; leaves 7-20 cm. long, 12-15 

 mm. wide, long acuminate, 

 rounded and more or less ciliate 

 at the base, margins usually fluted 

 and minutely ciliate. 



Hab. Sandy pathway in open 

 woods, northwest shore, Island of 

 Cozumel, Millspaugh PI. Utomaniz 

 1480 (Paspalum Schaffneri Field 

 Col. Mus. Bot. 2:24). 



Ad. Tonduz 8038 Flora Cos- 

 taricensis; Tracy 7369 Pierce, Texas; and Bush 264 Brazos River, 

 Texas, are referable to this species. 



