410 98. eEAMINB^. 



t Spikelets very shm-tly stalked or suhsessUe. 



45. Bbachtpodium. Spikelets terminal. Gl. opposite, un- 

 equal, many-flowered, their edges towards the racms. Upper 

 pale coarsely fringed on tlie ribs. — The unequal gl. distm- 

 guisli this from Triticum. 



tt 82}ikelets quite sessile. 

 \. Glumes 2. 



46. Tbitictjm. Spikelets solitary. Gl. opposite, nearly 

 equal, many-flowered, their edges towards the rachis. Inner 

 pale minutely ciliate on the ribs. 



47. Eltmtjs. Spikelets 2 or 8 together. Gl, 2, both on the 

 same side of the spikelet, loithout aums or bristles, with 2 

 or more perfect flowers. 



48. HoBDETJM. Spikelets in threes, often partially barren. 

 Ol. 2, ending in long bristles ; 1 perfect flower and a stalk- 

 like rudiment. 



49. Leptueus. Spikelets solitary, imbedded alternately on 

 opposite sides of the rachis. Gl. 1 — 2, both on the same 

 side of the spikelet, cartilaginous, covering the one fl. and 

 superior rudiment. Pales scarious. Stigmas feathery. 



41 Glume solitary, bractlike, or a very small upper one. 



60. LoLiTJM. Spikelets solitary, placed edgewise on the rachis. 

 Gl. solitary, or that next the rachis very small, with 3 or 

 more flowers. 



Suborder I. Clisanthem. Tribe I. Panicece. 

 1. Digiia'kia. Scop. 



[D. sanguindlis (Scop.) ; 1. and sheaths hairy, fl. oblong-lan- 

 ceolate glabrous with downy margins (?). — B. JB. 849. P. 70. — 

 8t. ascending, a foot long. — Not a native. A. YIII.] E. 



1. D. humifusa (Pers.) ; 1. and sheaths glabrous, fl. ovate 

 ■ downy with glabrous veins. — U. B. S. 2613. P. 71. — St. mostly 

 procumbent, 4 — 8 in. long. Spikes usually 3 or 4, springing 

 from nearly the same point. Spikelets in pairs, one on a longer 

 stalk than the other. — Sandy fields, rare. A. VII. VIII. E. 



2. Echinoch'loa Pal. de Beauv. 

 [E. Cnis-gaVU (Beauv.) ; spikes alternate or oppofiite, spike- 



