U 10. GRAMINEJE. Pl.end.ph . 
d. Glumes 2 -flowered; flowers polygamous ; spathellules 2. 
Spathellules awnless ; lower glumes very 
minute; axis digitate; locusta unilateral.. Digitaria. 100. 
Spathellules awnless; lodicule obtuse; 
axis panicled; locusta involucrated with 
bristles Setaria. 101. 
Spathellule lower, ending in a bristle; 
glumes and glumelles of the lower flowret 
hairy Echinochloa. 102. 
Lower spathellule awned on the back 
below the middle; apex 2-lobed; lower 
flowret male Arrhenatherum. 75. 
e. Glumes 3, or many-flowered ; flowers polygamous . 
Spathellules awnless ; glumes 5 or 7-flowered ; 
upper flowret hermaphrodite, base girt with 
woolly hairs Arundo. 71. 
Lower spathellule awned ; glume 3-flowered ; 
middle flowret s hermaphrodite, awnless 
Anthoxanthum. 78. 
f. Glumes 2 or many -flower ed ; flowers hermaphrodite . 
Spathellules awnless ; locust ce 2 in each in- 
volucrum; involucrum 1 -leaf, globed; lobes pin- 
natifid Cynosurus. 68. 
Spathellules awnless, cordate, not notched ; 
involucrum 0 ; glumes compressed, base cor- 
date, subauriculated Briza. 55. 
Spathellules awnless, ovate, not notched; in- 
volucrum 0; glumes ovate; upper floscule abor- 
tive, pedicelled Melica. 57. 
Spathellules awnless, lanceolate, acute; invo- 
lucrum 0 ; stigmata aspergilliform ; seed bimu- 
cronate Mon ilia. 56. 
Spathellules awnless; upper 2-cut, toothed; 
involucrum 0; stigmata villose; lodicule ovate, 
smooth Poa. 54. 
Lower spathellule mucronate, 2-lobed ; 
upper 2- toothed ; locus tee elongated ; flowret s 
2-rowed, imbricate Megastachya. 53. 
Lower spathellule mucronate; locus tee shorter 
than the glumes; lodicule lanceolate Triodia. 58. 
Lower spathellule ending in a bristle; 
spike involucrated ; style simple ; lodicule 
subulate Sesleria. 69. 
