FEB. 1903. PLANTS YUCATAN^E MILLSPAUGH & CHASE. 



35 



spreading white hairs, branches erect-ascending, 2-6 cm. long; rachis 

 hispid; long-hirsute at the base. Spikelets 1.4x2.5 mm., russet or 



brown, obovate, subacute, glabrous, on 

 hispid pedicels bearing scattered stiff white 

 hairs. First glume less than ^ the length 

 of the spikelet, 5-nerved; second and third 

 equal, y-nerved, internerves transversely 

 wrinkled; fruiting glumes 1.3x2.2 mm., 

 pale stramineous, oval, subacute, trans- 

 versely rugose. Grain brownish -ocher, 

 orbicular with acute apex and base, i x 1.2 

 mm. ; in section plano-convex. 



Hab. Merida, May and June, 1865, 

 Schott 384; environs of Merida, 1887, 

 Millspaugh 47; Chichankanab, Gaunter 

 1298, forests of Buena Vista Xbac, Sept. 2284, Izamal 2320. 



Panicum Carthaginense Swartz Fl. Ind. Occ. 1:148. 



Panicle exserted, few-flowered, 5-7 cm. long, 1-1.5 cm wide; 

 branches few, erect-ascending, i cm. or 

 less in length; axis and rachis densely 

 hirsute with stiff white spreading hairs. 

 Spikelets 1.9x4 mm., russet-green, ob- 

 ovate-oval, mucronate on short hirsute 

 pedicels. First glume over ^ the 

 length of spikelet, 5-nerved, mucron- 

 ate, hirsute; second and third equal, 

 mucronate, 7-nerved, hirsute, inter- 

 nerves obscurely transversely wrinkled; 

 fruiting glumes 1.6x3 mm., pale stra- 

 mineous, oval, acute, transversely 

 rugose. Grain brownish-ocher, 

 broadly oval with acute apex, 

 i . 2 x i . 65 mm. ; in section biconvex with shallow furrow on the ventrum. 



Hab. Merida, July n, 1865, Schott 592. 



ICHNANTHUS Beauv. Agrost. 56. t. 12, f. i. 



Inflorescence a simple panicle. Spikelets in pairs, i-flowered, 

 perfect; rachilla articulated below the empty glumes. Glumes 4, 

 empty glumes membranaceous, fruiting glumes coriaceous, the glume 

 (in our species) auricled at the base, margins not inrolled but closely 

 folded about the palea. Grain dorsally compressed, enclosed within 

 the fruiting glumes. Stamens 3. 



Ichiiaiithus lanceolatus Scribn. & Sm. Bull. 4. Div. Agrost. 



Studies on Am. Grass., 36. 

 Panicle short exserted, 8-15 cm. long, 3-5 cm. wide; branches erect 



