404 98. GEAMINE^. 



A. Sachis of itiflorescence teithout lateral excavations. 



Tribe I. PANICEJE. Spihelets dorsally compressed, \-Jlowered, 

 or witli 1 fl. and an inferior glumelike rudiment or a neuter 

 flower. Lower gl. much the smaller, often rudimentary. 



1. DiGiTAEiA. Spikes fingered. Spikelets in pairs on one 

 side of the flattened rachis, awnless, 1-flowered, with an 

 inferior rudiment. Gl. 2, lower smaller or 0, iipper 3- 

 veined. Sterile fl. of one 6 — 7-veined pale equalling the 

 flower. 



[2. EcHiNOCHLOA. Spikes compound, secund in the whole 

 and in each part. Spikelets on one side of the flattened 

 partial rachis, 2-flowered, inferior fl. rudimentary. Gl. 2, 

 lower 3- veined, upper equalling fl. 5-veined muoronate or 

 awned. Lower pale of sterile fl. like and equalling upper 

 glume.] 



3. Sbtaria. Spike cylindrical, compound. Spikelets sur- 

 rounded by an involucre of bristles, 2-flowered ; inferior fl. 

 rudimentary. Gl. 2, lower 3-veined, upper equalling fl. 

 many-veined. Sterile fl. of 1 pale, like and equalling upper 

 glume. 



Tr. IL CHLORIDES. Spikelets laterally compressed \-flow- 

 ered in our plants and sometimes with a superior ruditnent, 

 placed in 2 rows on one side of a flattened rachis, or alternate 

 and unilateral. 



4. Cynodon. Spikes fingered, spreading. Spikelets 1- 

 flowered, awnless, with a superior rudiment. Gl. nearly 

 equal, patent. Pales equal ; lower boatshaped, compressed, 

 embracing the inner. Styles long, distinct. Stigmas fea- 

 thery. 



6. Spabtina. Spikes upriyht, in a raceme. Spikelets 1- 

 flowered, awnless. Gl. imequal ; upper lanceolate. Pales 

 unequal ; lower boatshaped, compressed. Styles long, 

 united halfway up. Stigmas feathery. 



6. MiBOBA. Inflorescence a somewhat 1-sided raceme. Gl. 

 not keeled blunt. Fl. 1. Pale 1, scarious, very hairy, 

 blunt, not awned. 



Tr. in. PHALARIDEJE. Panicled. Spikelets laterally com- 

 pressed, \-fowered, with 1 or 2 glumelike inferior rudiments, 

 or 1 or 2 inferior male flowers. Gl. equal covering the 

 flowers. Styles long. Stigmas filiform. 



