112 
TripeE XI.—FESTUCEA. 
Spikelets 2-to many-flowered, usually hermaphrodite, pedicel- 
late in racemes or panicles, the latter sometimes dense and spike- 
like; flowering glumes usually longer than the empty ones, 
awnless or with one to several straight (rarely bent) awns which 
are either terminal or borne just, below the apex. 
This is the largest tribe in the order, numbering 
76 genera and about 725 species. It contains the most 
important meadow grasses of the temperate regions as 
well as the more prevalent grasses of the higher moun- 
tains within the tropics. The genus Poa, which in- 
cludes Kentucky blue grass, Texas blue grass, ete., 
numbers 100 species, and an equal number of species 
are included in the genus Lragrostis. The Fescues 
number 80 species, and the tribe takes its name from 
this genus— Festuca. Orchard grass, Dactylis glome- 
rata, is a well-known example of this tribe. 
KEY TO THE GENERA OF THE FESTUCEA. 
1. Flowering glumes with 9-23 awn-like divisions, or awned 
lobes Ps 
1. Flowering glumes with fewer lobes, or entire 3 
bo 
Panicle narrow ee oe divisions of the flowering glumes 
awn-like . PAPPOPHORUM 
Panicle expanded; divi isions of the flowering iiuanies membra- 
naceous, awn-pointed 
bo 
OTTEA 
> Spikelets unisexual, the two sexes very unlike; glumes of the 
rae tillate flowers 3-awned, those of the sta carries flowers 
nless 
. SCLEROPOGON 
; Spikelets rtihey Stas or if unisexual, fame of the two 
4 
ve 
4. Spikelets in groups of three along a common axis, the groups 
readily deciduous as a heen flowering glumes four-parted, 
awned between the divisions 88. Cara 
4. Spikelets not in Soastetlony groups or fascicles 
Sete i i 
5. a of es kinds in the same inflorescence, a 
dite and steri 
5. Spikelets all inter in the same inflorescence..........-----. : 
