572 GRAMINEJE. (GRASS FAMILY.) 
46. Holcus. Lower flower a small neutral palea, often obsolete; the 
perfect one 3-androus and awnless ; the terminal 3-androus, 
with the lower palea awned above the middle. 
* * Terminal flower perfect and awnless. 
47. Hierochloa. Lateral flowers each of 2 pale®, mostly awned, 
3-androus ; the perfect one 2-androus. 
48. Anthoxanthum. Lateral flowers each of one awned palea, neu¬ 
tral ; the perfect one 2-androus. Panicle spiked-contracted. 
49. Phalaris. Lateral flowers each of one neutral and awnless ru¬ 
diment; the perfect one 3-androus. 
III. PANlCEiE, R. Brown.— Spikelets 2-flowered, the 
lower flower always imperfect, either staminate or neutral, 
when it is usually reduced to a single empty valve (placed 
next the lower glume, if that be present) ; the upper flower 
(placed next the upper or inner glume) only fertile. Grain 
grooved on the outer side ! (next the lower valve of the fer¬ 
tile flower), if at all; the embryo at the bottom of the 
groove. (Flowers polygamous, or hemigamous (when the 
lower flower is neutral), or sometimes seemingly simple and 
perfect, from the suppression of the lower glume and ot 
the upper palea of the neutral flower, or else monoecious, 
or rarely dioecious. Rarely both glumes are wanting.) 
Tribe 7. PANfCEiE proper. — Glumes and sterile paleae herba¬ 
ceous or membranaceous : paleae of the fertile flower of firmer 
texture, coriaceous or chartaceous, awnless, not keeled, flatten¬ 
ed parallel with the glumes. 
* Spikelets appearing as if simply 1-flowered from the suppression of 
the lower glume; the single neutral palea of the sterile flower 
apparently occupying its place. (Awnless.) 
50. Milium. Spikelets not jointed with their pedicels, all alike in a 
terminal open panicle. 
51. Amphicarpum. Spikelets jointed with their pedicels, of 2 sorts, 
one in a terminal panicle; the other on radical peduncles. 
52. Paspalum. Spikelets jointed with their short pedicels, all alike, 
plano-convex, in one-sided spikes or spiked racemes. 
* * Spikelets manifestly -2-flowered (polygamous, the lower stam¬ 
inate or often neutral), the lower glume being present. 
53. Panicum. Spikelets not involucrate, naked. Lower glume small 
or minute. Sterile flower staminate or neutral. 
