Mf 



r - 



^■ 



tf ■ 



p - 



F 



/' 

 ^' 



r 



c 



6 ci.xxin. QRAMiNE-E, (J. D. Hooker.) 



* Racliilla not produced beyond gl. II. 



t Spikeleis articulate on their 'pedicels^ or gl, I and II separately deciduous, 

 07 pedicel articulate in the middle, 



Suikelets oblong; gl. I and II 3-nerved, III 5-nerved, 



awnless 67. Cyathopits. 



Spikelets very narrow; gl. 1 and XI 3-nerTed, III faintly 



1-3-nerved, usually awned 68. Garnotia. 



Spikelets compressed ; gl. I and 11 subequal, awned, 



nerved 69. Polypogon. 



Spikelets subglobose ; gl. I nerveless, II and III 1. 



nerved, awnless 70. Sph^kocaryum. 



ft Spikelets and pedicels inarticulate, gl. I and II persistent. 

 Gls. all awnless; land II 1-nerved, pericarp of grain 



loose , . , 71. SpoaoBOLUfl. 



Gl. I and II subequal, l-nerved, awnless, awn of 111 



dorsal or 72. Ageostis. 



Gl, I and II unequal, awnless, l-nerved, awn of III ter- 

 minal 73. MUEHLENBERGIA. 



Gl, I and II 3-nerved, awnless, base of III penicillate 



with long hairs 74. Calamagrostis. 



*• Rftchilla produced beyond gl. Ill usually peni- 

 cillate with long, silky hairs; gl. I and II 3-nerved. . 75. Deyeuxta. 



Tribe VII. Avexje^. Spikelets 2- or more fld., panicled, very rarely 

 spicate, or panicle subspiciform ; fl. gls. usually awned, awn geoiiulate 

 and often twisted, rarely straight or 0; rachilla produced or not beyond 

 the upper fl. gl. 



Subtribe I. Aire.e. SpiJcelets 2-fld. ; gls. membranous; rachilla not 

 produced- * - - . - ; . . , 



Gl. I acute, many -nerved ; fl. gl. long-ciliate . • « 76. Ertachne. 



Spikelets minute ; rachilla and keel of fl. gl. ciliate . , 77. Zknkeria. 



Spikelets awnless; gl. Ill largest 2-sexual, IV male . 78. Coelachne. 



Spikelets 3-nate; gl. I and II awnless, III male, cleft, 



awned in the cleft . • . . • . . 79. Tristachva, 



Gl. I and TI awnless. III and IV biiexual, hyaline, dor- 

 sally ftwned . • 80. Air a, 



Subtribe III. Euavene^. Spikelets 2- or more fld.; rachilla pro- 

 duced. 



Spikelets 2-fld,, both bisexual, awned . • . .SI. Deschampsia. 

 ijpikelets 2-fld., lower fl. bisexual awnless, upper male 



or neuter awned .... ... 81*. HoLCUS. 



Spikelets 2-6-fld. ; fl. gl. awned, awn subterminal or 



dorsal 82. Avexa. 



Spikelets 3- or more-fid. ; fl, gl. deeply cleft, awned in 



the cleft 83. Dantuonia. 



Tribe VIII. CiiLORiPi;.K.. Spikelets 1- or inore-fld., 2-senate (some- 

 times very distantly) and secund on an inarticulate spike or on the spici- 

 form Lrancbea of a slender panicle; fl. all or the lower only bisexual; 

 rachilla produced or not beyond the upper fl. gl. 



* Spike solitary, terminal (see also Chloris). 



Spikelets minute, l-fld., awnless 84. MlcROCHLOA. 



SpikeletB 1-2 -fid., in pedicelled deciduous articulate 



cIusUts, awned 85. Gracilea, 



hpikelets 1-2 fld., m sessile inarticulate clusters, awned . 8o. Enteroiooon. 



Spikelets mauy-fld. ; fl. gl. 3-awued . . • . 87. Tkipooow. 



-.4 



