DESCRIPTIONS OF TRIBES AND GENERA. 



153 



or sharp points. T. cuprea Jacq., a showy grass with 

 open panicles [common in the Eastern United States], 



Sec. V. Triplasis Beauv. (as a genus), (Uralepis Nutt., 

 Diplocea Eaf.). Flowering glumes three-cleft, the middle 

 division recurved and awn-like. North America. 



219a. Redfleldia Vasey. 

 Florets crowded, the short 

 joints of the rachilla smooth. 

 Flowering glumes charta- 

 ceous, densely hairy on the 

 callus only, 3-nerved, indis- 

 tinctly 3-toothed or terminat- 

 ing in a short mucronate point. 

 Styles long ; stigmas short. 

 Grain oblong, terete, free. 



Species one (R. flexuosa 

 Yasey, Graphephorum C?)flexu- 

 osum Thurber), (Fig. 78) in the 

 "Western United States. 



220. (202) Diplachne BeaUV. FIG. TS.Redfieldia flexuosa Vasey. 



_. . , , x . B, Spikelet. a, A single floret show- 



Splkelets narrow, many- ing joint of rachilla, etc. a', A single 



a *- , a . , floret from a one-flowered spikelet, 



flowered ; flowering glumes with a rudiment of a second floret 



- ,, , , , , above, b, Apex of flowering glume. 



1-nerved, keeled, USUally E, Palea. F, Flower. (Original.) 



2-toothed, the teeth mucronate or awn-pointed ; fruit 

 3-angled, unfurrowed. 



Species fifteen, in the warmer countries of both hemi- 

 spheres. Leptocarydion~H.oclist. and Trichoneura Anders- 

 son include species that form a transition to Triodia. 



SUB-TRIBE E. Eragrosteae. 

 Flowering glumes three nerved, awn less or short-awned. 



221. (226) Dissanthelium Trin. (Phalaridium Nees, 

 Stenochloa Nutt.). Panicle narrow ; flowering glumes 

 broad, obtuse, awnless, 3-nerved, the lateral nerves 

 nearly marginal. 



Species three, of low habit, one in California, the 

 others upon the Andes of South America and coasts of 

 Mexico. 



222. (227) Molinia Schrank (Enodium Gaud.). Pani 



