309 
Spikelet indented ; one hard outer glume 34. P eth (p. 
30. Outer glume membranous, 1-nerved ... 56. Mierchla (p. 
326). i 
Outer glume tubercled, 7— 10 nerved... 32. S (p. 
31. Both spikelets 1-flowered X MEG. ee Rottbbeltt (p. 
321). 
Sessile d pr: with a second flower 
s male; rry one 
reduc to a glume i E 32. 
32. Outer glume globose .. 35. Manisuris X (p. 
21). 
Outer glume flat with ineurved margins 37. Ischaemum (p. 
322). 
o 
o 
ad 
M 
o 
D 
. Female flower in a hard white vesicle... 
Female flower not in a white vesicle .. 
. Female flowers crowded on a spongy 
spike 
Female aber not crowded ona a spongy 
spi 
5. Spikelota i in a sigle spike, upper ones 
male, lower fertile . 
a 
. Spikelets singly sessile or accompanied 
by a rudimentary pedice 
Spikelets in Eus one oe the odibr 
pedicelled . 
. Glumes acute 
Outer glumes broad and truncate 
. Spikes many ; leaves deeply cordate ... 
Spikes 1, 2 or many ; leaves not cordate 
Both spikelets awned . - 
One spikelet awnless 
Glume Iv more than à ge II Or 
Inflorescence racemose... 
. Sessile spikelet ——P aE 
All spikelets monoecious 
Bisexual flower alone in the sessile 
ikelet 
sp 
One. bisexual ud one ale’ Hower 
in sessile spikelet ... ni 
13. v: (e 817). 
14. Zea (p. 317). 
35. 
11B. Thuaria(p.317). 
12, Spinifex (p. 317). 
37. 
39. 
38. 
30. Apocopis (p. 320). 
32. Arthraxon (p. 
31. Dimeria. (p.320). 
40. 
42, 
28. Polliaia (p. 319). 
81. Ischaemum (p. 
29. Me ea MÁOre (p. 
330). 
43. 
38. Heteropogon (p. 
322). 
44. 
UU, 
P. 
37. Ischaemum 
3 ^ 
