380 
BOTAOT. 
Valley and in the East Humboldt Mountains, Nevada ; 5-7,000 feet altitude ; 
July. (1,293.) Quite variable in the length of the glumes, (8-20",) palet, 
(4_10",) and awn, (2J-8'.) Leaves and nodes never pubescent, lower palet 
rather spreading-pilose, the awn twice geniculate, usually pubescent toward 
the base. The species seems not to extend southward. In Texas and New 
Mexico S. Neesiana, Trin., (S. setigera^ PresL, and probably also <S. ciliata, 
Scheele, and leucotriclia, Trin.,) takes its ^^lace, a rather smaller grass with 
more slender culms, pubescent upon the leaves and nodes, and the palet fim- 
briate-crowned ; collected by AYright, and 980 Fendler, (but near S. spartea,) 
and also occurring in California. 
Stipa comata, Trin. Steud. Gram. 130. It is not easy to find constant 
characters to distinguish this species from S. spartea, other than the always 
elongated (6-8') once-geniculate awn, glabrous toward the base or with a 
single pubescent line, very slender and much curled and twisted ; panicle 
always sheathed at base, the branchlets with but 1-2 spikelets ; palet 5-8" 
long, the hairs more silky and appressed. On the Saskatchewan, and on the 
Upper Missouri from Dakota to Northern Idaho, and southward. Mono Lake, 
California, (Bolander.) Foot-hills of the Truckee Range, Western Nevada, 
and on Stansbury Island in Salt Lake ; 4-5,000 feet altitude ; May. (1,294.) 
Stipa viridula, Trin. Steud. Gram. 129. Culms stout, strict, and 
with the narrow sheaths scabrous or sometimes glabrate, 1-3 J° high, the 
nodes naked ; leaves elongated, mostly narrow and involute, 1-3" broad, 
scabrous ; panicle narrow, contracted, 3-10' long, the erect branches 2-3 to- 
gether, flowering from the base or some of them naked below ; glumes nearly 
equal, 3-4 J" long, narrowly acuminate ; lower palea 2 J-3" long, short-pilose 
at the obtusish base, appressed-pubescent above, and with a pilose crown at 
the apex ; awn about 1' long, twisted and geniculate, minutely scabrous. — 
From the Saskatchewan to Arkansas, Colorado and New Mexico ; California, 
(BolanderO 849 Fendler and 349 Gregg are a very stout forin with large 
and dense panicles. East and West Humboldt Mountains^ Nevada ; 8,000 
feet altitude ; August. (1,295.) 
Stipa occidentalis, Thurb., Ms. in Bol. Coll. Culms 1-2^ high, slender, 
with the narrow sheaths somewhat scabrous ; nodes naked ; leaves very nar- 
row, flat or mostly involute, rough on the margin ; panicle often sheathed at 
base, contracted, few-flowered, 2-6' long, the branches in pairs, 2-4-flowered ; 
glumes 5" long, purplish, a little unequal, acuminate ; lower palet 3 J" long. 
