* 840 GRAMINEZ:. 
Small creeping usually maritime grass. Leaves short, 
rigid. Spike eg stiff. eae Tete to the 
rhachis... .. 2. °ZOvGras 
TripE III. PANICE A. 
Spikelets with 1 terminal hermaphrodite flower with or without a male 
one below it. Flowering glumes awnless, cartilaginous or coriaceous, in fruit 
hardened and enclosing the grain. Outer glumes thinner in texture than the 
flowering glumes, rarely awned. 
Spikelets 1-flowered, plano-convex, sessile in 2 or 4 rows in 
one-sided spikes which are either in pairs or form the 
branches of a simple panicle. Hmpty glumes 2 .. 93. PAsPALUM. 
Spikelets with 2 hermaphrodite flowers, panicled; outer 
glumes 2, persistent after the rest of the spikelet has 
fallen away 4. ISACHNE. 
Spikelets with 1 hermaphrodite flower and sometimes a 
male flower below; outer glumes 2 or 3, not awned, the 
lowest often very small 2: ws by .. 5. Panicum. 
Stems weak, decumbent ; leaves broad, ovate to lanceolate. 
Spikelets as in Panicum, but outer glumes awned .. 6. OPLISMENUS. 
Spikelets enclosed, each one or 2-3 together, in an in- 
volucre of rigid spines or bristles, often connate into a 
cup below .. ae nc .. 7. CENCHRUS- 
Stout wide-creeping sand- plant. Inflorescence dicecious ; 
males in spikes clustered in heads; females in dense 
globular heads with long radiating Sige pointed 
bracts ate oe se ; .. 8. SPINIFEX. 
Division B. POACEA. 
Spikelets not articulated on the pedicel below the glumes, the 
rhachilla continuous with the pedicel, and the articulations above 
the outer glumes and frequently also between the flowering glumes. 
Flowers 1 te many, the lowest flower perfect, the uppermost often 
male or imperfect. (Lower flower imperfect in Phalaride@.) 
TriBE IV. PHALARIDEA. 
Spikelets with 1 terminal hermaphrodite flower, with or without 1 or 2 male 
or rudimentary flowers below. Outer glumes 4, the lower 2 sometimes small, 
the 2 inner sometimes serving as flowering glumes for male flowers. 
First and second outer glumes smaller than the third 
and fourth. Flowering glumes obtuse .. 9. KHRHARTA. 
First and second outer glumes minute, many times smaller 
than the third and fourth. Flowering glumes acute .. 10. MicronzNa. 
First and second outer glumes as large as the third and 
fourth, both of which usually contain a male flower .. 11. HisRocHLe. 
Trin—E V. AGROSTIDEA. 
Spikelets 1-flowered; rhachilla frequently produced beyond the flower. 
Outer glumes 2, usually as long or longer than the flowering glume. 
Spikelets panicled. Outer glumes usually longer than the 
flowering, which are rigid and convolute andawned. Awn 
long, terminal, bent, usually twisted below the bend .. 12. Sripa. 
Panicle short and dense, cylindrical, bristly from the long 
awns. Flowering glume hyaline, 3-fid, middle lobe pro- 
duced into along awn. MRhachilla evidently produced.. 13. EcHINoPpoGoON. 
