84 10. GRAMINE^. PL end. ph. 



d. Glumes ^-Jlowered ', fiowers 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; 

 flumes and glumelles of the lower flowret 

 hairy Echinochloa. 102. 



Lower spathellule awned on the back 

 below the middle ; apex 2-lobed ; lower 

 Jiowret male Arrhenatherum. 75. 



e. Glumes S, or many -flower ed;jlowers polygamous. 



Spathellules awnless ; glumes 5 or 7-flowered ; 

 upper flowret hermaphrodite, base girt with 



A/' . , woolly hairs Arundo. 71. 



/B^^ffsJ ]\,oiJi;gr spathellule awned; glume S-^ovfeved', 

 middle flowret s hermaphrodite, awnless 



Anthoxanthum. 78» 



f. Glumes 2 or many-floiuered; flowers hermaphrodite, 

 Spathellules awnless ; locTistce 2 in each in- 



volucrura; involucrum l-leaf,^lobed; loles pin- 



natifid Cynosurus. 68. 



Spathellules awnless, cordate, not notched ; 

 involucrum ; glurnes compressed, base cor- 

 date, subauriculated Briza. 55. 



Spathellules awnless, ovate, not notched; in- 

 vohi.crum 0; glujnes ovate; upper floscule abor- 

 tive, pediceiled Melica. 57^ 



Spathellules awnless, lanceolate, acute; invo- 

 lucrum ; stigmata aspergilliform ; seed bimu- 

 cronate Monilia. 56. 



Spathellules awnless; upper 2-cut, toothed; 

 involucrum 0; stigmata villose ; lodicule ovate, 

 smooth PoA. 54. 



Lower spathellule mucronate, 2-lobed; 

 upper 2-toothed ; locusice elongated ; flowrets 

 2-rowed, imbricate Megastachya. 53i 



Lower spathellule mucronate; locustce shorter 

 than the glumes ; lodicule lanceolate Triodia. 58, 



Lower spathellule ending in a bristle; 

 spike involucrated ; style simple ; lodicule 

 subulate Sesleria. 69. 



