18. frisetum Pers. 
Perennials with open or contracted panicles. Spikelets 2 or 3 
flowered, disarticulating above the glumes and between the florets, the 
rachilla prolonged behind the upper.iost floret, hairy; glumes from nearly 
equal to very unequal,the second about as long as the first floret; lemmas 
Cleft at the summit, the teeth sometimes setaceous=pointed, awned from the 
back above the middle, the awm short and included, or exserted, spreading, 
straight or geniculate, often loosely twisted below. 
o Avus wanting or short and included 1. Te Wolfii 
oAvms long-exserted 
~ inflorescence dense and spikelike; spikelets 
o-flowered 
Z Inflorescence open, if somewhat dense ythe 
(Spikelets 2-flowered 
4 Panicle branches Sspikelet=bearing from near the 
@ base; foliage more or less pilose; blades fim 3. 7, canescens 
Panicle branches naked below; foliage glabrous 
8 or scabrous; blades thin and lax 4. T. 
=@ 
cernuum 
1. fT. Wolfii Vasey. ———>culus erect, as much as 70 cm. tall; sheaths 
smooth or scaberulous, more or less retrorsely pilose; ligules broad, erose, 
2-4 mme long; blades flat, rather firm, erect or ascending, 5-10 om. long, 
chose of the innovations longer, 2-5 mn. wide, scaberulous and more or less 
pilose on both surfaces; panicles dense, 10-20 ome long, the branches appressed 
or somewhat spreading; spikelets 2-3 flowered, pale, Shining, tinged with 
purple; glumes lanceolate, nearly equal, 4-7 mm. long, the first l> the 
second S-nerved, scabrous on the keels; lemnaas scabrous, the lower 4-5 mn. 
awnless or with a very short awm scarcely reaching the tip. 
long, 
Mountain meadows. 
By of 
7 Santianne Cr. bottoms, Head of Little Potlatch R 
ite 
Cy TT Lio e Dosen 7 £25 
= Sea 12) —> 
