712 GraMines (Stapf). [ Poa. 
linear, often grooved, free or adherent to the pale; hilum puncti- 
form, ‘basal ; ; embryo small. 
Annual or perennial ; blades flat and flaccid or conyolute and more or ieee 
rigid ; rites s hyaline ; As open, often effuse, rarely contracted, spike-like 
ni rather small, awnles: 
umerous species in the eesti regions, particularly of the northern 
ed Sarin few in the tropics 
Perennial ; anthers 1 lin. or more lon 
Low sin engine ae ag at the “oa, og ee a 
r less distin ulb ; innov. n blades 
tally = nely filiform ; ee, very often 
... (1) bulbosa. 
iinet given not thickened at the b: nse ; blades 
not finely filiform 
Valves cancciail by long, often copious 
Spikelets 24-3 lin. long, elegantly varie- 
gated, 2-6 on 2-nate smooth 
branches of a aie Jax and scanty i 
anic ia ae (2) Atherstonel. 
ong, not 
fouls 
va 
ho 
branches of a rather compound pa- 
nicle : 
Culms — — strongly com- 
res es minutely 2- 
toned (3) bidentata. 
Culms terete or “ subcompressed 
below, about 3-noded; valves A 
ntire .. (4) trivialis. 
Valves glairous or almost 50, wit thou 
ue beast basal sheaths itiiesite 
breaking wu 0 persis bres 5) binata. 
Aunual or re sD pita ae hae $ lin, long (6) annua. 
1. P. bulbosa (Linn. Sp. Pl. 70); perennial, densely cespitose, 
4-16 in. ia, glabrous ; culms ereet, terete, smooth, 2-3-node d; 
upper in modes exserted ; leaves crowded near the base, lowest 
= the upper part, remainder tighter ; ligules oblong or ovate, 
3-2 lin. long ; = linear, acute, those of the barren shoots often 
finely filiform, 2-2 in. long, upper much shorter, up to 2 lin. — 3 
panicle oblong to ‘ovate, contracted, lobed, 4-2 in. long ; the low 
branches geminate, almost smooth, branchlets short, tae ; 
Ww 
ovate, acute, 1-1} lin. long, 3-nerved, rarely 1-nerved, margiy’ 
broadly hyaline, keel asperulous; upper 
more earns ate, 3-nerved; valves — acute, a 4 toon lends 
middle: tia wool scanty or r 0, nerves obscure ; pales sli 
shorter than the bg i ; keels scaberulous ; anthers 2~1 lin. long. 
Host, Gram. Austr. bh 65; Engl. Bot. t. 1071; Kunth, Enuin. 
