476 98. GEAMINEJE. 



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

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

 glume.] 



3. SETARIA. 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. II. CHLORIDES. Spikelets laterally compressed l : /?o?r- 

 ered in our plants and sometimes with a superior rudiment, 

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

 and unilateral. 



4. CAPRIOLA. 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 

 feathery. 



5. SPARTINA. Spikes upright, in a raceme. Spikelets 1- 

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

 unequal ; lower boatshaped, compressed. Styles long, 

 united halfway up. Stigmas feathery. 



6. MIBORA. Inflorescence a somewhat l-sided raceme. Gl. 

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

 blunt, not awned. 



Tr. III. PHALARIDEAL. Panicled. Spikelets laterally com- 

 pressed^ ^-/lowered, with ] or 2 glumelike inferior rudiments, 

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

 flowers. Styles long. Stigmas filiform. 



7. PHALABIS. Gl. 2, boatshaped, keeled, membranous, nearly 

 equal, exceeding the flower. Pales coriaceous, unequal, 

 closely investing the fruit. Rudimentary fl. 1 2, scale- 

 like. 



8. ANTHOXANTHUM. Gl. 2, unequal, membranous; lower 

 small, 1-veined ; upper exceeding the fl., 3-veined. Pales 

 scarious. Stam. 2. Rudimentary fl. 2, scalelike, bifid, 

 awned on the back. 



9. HIEROCHLOE. Gl. 2, nearly equal, membranous, about 

 equalling the spikelet. Fl. 3 ; 2 lower male, 3-androus, 

 upper pale with 2 keels ; upper fl. perfect, 2-androus, upper 

 pale with 1 keel. 



