97. GBAMINE^l. 



t Sessile spkts. all similar to one another. 

 Spkts. 2-or 3-nate on the whorled 

 articulate branches of simple or 

 compound panicles, spikes not sheathed 

 by spathes (exc. Andropogon spp., in 

 which also the inflorescence is various)* 



Spkts. 1-few on a branch, 

 truncate, not bearded 



Tips of articulations 



16. Borghwn. 



17. Chrysopogon. 



18. Andropogon. 



19. Heteropogon- 



20. Cymbopogon. 



<€pkts. 1 sessile and 2 pedicelled on a branch, tips of 

 articulations obliquely truncate and bearded . 



Spkts. many on a branch, or spike, or if few 

 then ioints and pedicels compressed with thickened 

 margins and translucent centre . . « 



tt Lower sessile spikeletB, differing front 

 those above them. Spkts. in simple or 

 geminate spikes, common peduncle of 

 latter in a spathiform leaf sheath. 



fipikes simple terminal . . 



Spikes geminate in a leafy panicle 



tft Spkts. in capitate or fascicled spikes 

 with spathiform leaf sheaths, the 

 whole in leafy panicles- 

 Clusters of 2 or more pedicelled bracteate spikes 

 and empty glumes (reduced spikes) subtended by 

 spathes. Spikes with one 2-aexual spkt. sessile on 

 the bulbous base of the short rachis, 1 empty 

 basal sessile spkt. and 1 male or neuter terminal 

 spkt. . . . . — . ... 



Clusters of one or few pairs of sessile and 

 pedicelled spkts. surrounded by an involucre of 

 empty ones 



B. Each spikelet with 1-manv flowering glumes. 

 Spkts. not articulate on their pedicels or deciduous 

 with their pedicels, but rachilla usually articulate 

 above the two lowest glumes (so that when ripe 

 these two glumes only remain attached to the 

 pedicel). 



Spkts. with only 3 glumes, 1-fld., unilateral 

 on 3-6 digitate slender spikes . . .23. Cynodon. 



Spkts. with more than 8 glumes, 3-12-Sd. sessile 

 and 2*3-soriate in dense digitate spikes , . 24 Eleusine. 



558 



21. Aplvda. 



22. Anthistiria. 



