Panicum.) CXLIV. GRAMINES. 465 
Fruiting glume glabrous, regue . 
Fruiting glume densely and softly pubescent . i . 44, P. eei e 
sare E ex distant. Spikelets with long silv very- 
BM pekere, ney dista . . « 1b, P. argenteum 
elets ovoid, ofte n appro 163.7; holuscriceum. 
Spikes sever distant. Spikelets glabrous, in 2 
e rows. 
Spikelets ager za Pe = li lines long in 2 clos 
d glume broad or eas 3rd 
with a Lese initsaxil . . . 17. P. flavidum. 
few = the s ike, ond me r 8 u:nes 
early equal, both empty 18. P. gracile. 
Spikelets struigh, very obtuse, 1} to 2 lines long, 
s irregula ar, Outer glume eei 
«omg aaa thers. A male flower in the 2rd 
* P. obtusum. 
iasa wally appro ximate, erect or at length sp read- 
Spikelets moti so clos ay ptum and busty 
s Hed b by h 
Sp ikelets about 1 pe vem frequently in pairs. A 
the 3rd glume. Fruiting glume obtuse, 
rely tipped with a minute poi ; 19. P. prostratum. 
,. With an awn-like point ` . 20. P. helopus. 
Spikelets nearly 2 lines long, “in 2 rows. A broad 
ea in the Bike glume, which is ciliate with lon. 
ere ing glume obtuse with a quee point 21. P. Gilesii. 
Spikelets Me 2 lines long, in 2 rows. 3rd glum 
ty. iis ng "ew ona obtuse without ce: 
po . . 22. P. piligerum. 
(See also the first Tour D of the "Panieulate). 
jug ss lie aE ngth spre seine or reflexed. Spike- 
ts alte store da. M^ MM is but not close and 
vede esprit 
lm pubescent "Spikelete distant on a slender 
rhachis . 23. P. polyphyllum. 
Leaves glabrous. Spikelets near together on a 
attened rhachis 24. P. distachyum. 
ae glabro.. Spikes reflexed, the rhachis 
t, an 
aoe bristle ree yo ee pia 25. P. reversum. 
la tes IV. Echinochlow. Spikelets sessile and crowded in 3 or 4 rows or irregu- 
i RE the ERASER pra usually secund spikes or spikelike branches of the 
es somet wned, 
Spikelets about i line ^k are awned, densely 
ed in 4 rows alo: eng, ananas without 
i dele 3 * 
Spikelets 12 to 2 lines “long, acumin: acumin or awned, 
rowded side ies Au the rhachis, eir 
. . 27. P. crus-galli. 
ticam "hri Spikelets nat a, crowded and clustered in a dense 
T rarely 
26. P. colonum. 
Pu 
Slee ovoid, obtuso, $ topline long . . . . . . 28. P. myom Ti 
