326 TRIANDRIA DIGYNIA. Melica. 
sulcate; proper pedicels, one minute and abortive, the other 
polygamous as in the sessile flower. Calyces of both the ses- 
sile and pedicelled flowers two-valved, two-flowered. Corol 
in all of them two-valved; valves unequal, exterior one thin 
and transparent. 
~ Obs. The accurate Geertner, Carp. vol, ii. p. 466. t, 175. 
gives to the sessile flower of A. mutiea, one hermaphrodite, 
and one female floret, and to the pedicelled one two male ones, 
consequently this must be different, and a second awnless — 
Species. 
AIRA. Schreb. gen. N. 112. 
Calyx two-valved, —— without the rudiment of 
a third, 
A, filiformis. Kin, Mss, 
Smooth, erect, one foot high. Leaves ensiform. Panicles 
oblong, compound, of simple, linear, secund racemes, 
A native of pasture ground, : 
Culms erect, mostly naked, round, smooth, about a feck 
high. Leaves small, smooth ; mouths of the sheaths enlarged 
by a membranaceous, torn process, Panicle erect, thin, ob- 
long, composed of alternate, simple, one-ranked, filiform, ex- 
a racemes, somal in two rows: a eae tiewse : 
4 eM E ee 
MELICA. Schreb. gen. No 113, | 
Calyx two-valyed, two-flowered, with the rudiment of a 
third. 
1. M, digitata, R 
Culms from four to five feet high. Spikes terminal ‘iad : 
ing, = five-fold. Galye sie hemonil outer vakroletes of 
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