FLORA OF THE SUNDRIBUNS. 
271 
16. Spil<elets in continuous spikes, racemes or panicles; outer 
glumes not firmer than flowering glumes, the lowest 
smallest sometimes very small or obsolete . . . 77 
Spikelets in pairs, one sessile, the other pedicelled, or the 
terminal 3-nate or solitary ; outer glumes firmer than 
the flowering glumes, the lowest longer than the florets 21 
17. Spikelets not subtended by a whorl of bristles . ,, 18 
Spikelets subtended by a whorl of bristles , 2ig. Setaria> 
18. Spikelets 2-flowered, the upper hermaphrodite, the lower 
' male or barren, separating from their pedicels . . ig 
Spikelets i -flowered, deciduous with the pedicels 22 j. Zoysia, 
19. Lowest glume obsolete, i.e., only 3 glumes present . . 20 
Lowest glume present, t\e,, glumes 4 . . 218. Panicum. 
20. Spikelets not thickened at the base . . 216 Paspalum. 
Spikelets thickened at base . . • , 2/7. Eriochloa. 
21. (16) Spikelets similar ....... ^2 
Spikelets dissimilar .... 226. Andropoaon. 
22. Stamens 3 ..... 22^. Saccharum. 
Stamens 2 , . . . . . . 224. Imperata. 
23. (14) Spikelets panicled or if spicate not secund . '. 24 
Spikelets 2*seriate and secund . . . . .27 
24. Spikelets 2-more- flowered ...... .25 
Spikelets i-flowered .... 227. Sporobolus. 
25. Spikelets without silky hairs . . . , * . 26 
Spikelets with glabrous glumes, but penicillate with long 
silky hairs on the rachilla . , . 2j0. Phrapmites , 
26. Outer glume shorter than the lowest flowering glume ; 
grain minute ...... 2J7. Eragrostis, 
Outer glume longer than the lowest flowering glume ; grain 
broad - . . . . . 2J2. Myriostachya. 
27. (23) Spikelets digitate or whorled . . ,, 28 
Spikelets on the long, slender, spiciform branches of an 
elongated simple panicle .... 2jj. Diplachne, 
28. Spikelets i-flowered . . , . , 228, Chloris. 
Spikelets more than i-flow’ered . . . 22g. Eleusine^ 
29. (2) Aquatic plants, floating or submerged , • * 30 
Land plants or, if growing in water, not submerged under 
normal conditions ; leaves and stems not floating , 44 
30. Leaves and stems floating, with roots from base or nodes 
suspended in the water . ^ . . . • • J/ 
Leaves and stems submerged; roots attached to soil . J4 
