11 
This grass is the largest and most robust species of Sitanion. It belongs to the 
S. multisetum group, differing from all other species in the very large spike and 
exceptionally long awn of the flowering glume. 
2. SITANION VILLOSUM J. G. Smith, sp. nov. Pl. 
Culms stout, erect, or slightly geniculate, 2 to 3 dm. high, metet leafy at the base, 
forming close, matted tufts. Sheaths rather densely hirsute, the lower strict, 
the uppermost somewhat inflated, scabrous. Ligule almost obsolete. Blades 
short, rigid, ascending or divaricate, finely strigose-pubescent and more or less 
densely hirsute, scabrous along the 5 margins, e eee 
acuminate, pungently- pe: 4 to 8 em. long, nt 3 mm. wide, flat, or at 
length involute. Spike 6 to 8 em. long Vlogs cien its base ead in the 
greatly elongated aten We Empty glume 3- to 7- or 8-parted 
from near the base, each lobe a very slender, scabrous, divaricate awn from 2,5 
to 8 em. long. Lowest floret usually sterile, M glume many-parted, like the 
empty glumes. Perfect florets 1 or 2. Flowering glume about 8 mm. long, 
obliquely lanceolate, smooth and shining at an vase, scabrous for the upper 
two-thirds, 3-awned, the middle awn rather stout, divergent, 8 to 10 cm. long, 
the lateral ones very slender, 5 to 10 mm. long Palea as long as the flowering 
glume, obtuse, acute, or with two short, slender awns di the apex. Internodes 
of the ‘seul 4 to 5 mm. long, linear-compressed, glabrou 
¿Pype collected by A. D. E. Elm mer, No. 266, on rocky hilltops, Almota, Whitman 
County, Wash., June 13, 1896; also collected by C. V. Piper, No. 2598, on dry, 
gravelly prairies, Spokane, June 25, 1897; and Robert M. Horner, No. 574, 
Waitsburg, Wash., June 3, 1897. 
T PREY may be separated from Sitanion SGH RAN to which it is closely 
ted, by the short, rigid, hirsute basal culm leave 
3. SITANION MULTISETUM J. G. Smith, sp. nov. 
Culms 3 to 5 dm. high, terete, striate, glabrous or srid strigose-pubescent, erect 
or slightly geniculate, much branched from t very base. Sheaths rather loose, 
open at the throat, scarious along the margins above, a and 
hirsute on the back, mostly longer than the internodes. Ligule very short, 
membranaceous, Blades 5 to 10 em. long, rigid, erect or ascending, linear, acute 
and pungently pointed, flat, becoming involute, sparsely hirsute on the back, 
scabrous on the margins, hirsute and scabrous along the prominent nerves above. 
Spike erect,5 to 8 em.long. Spikelets two at each node but usually only one 
slender, ascending, scabrous awns varying from 1 to 5 or rarely 8 cm. long. 
est flowering glume of the sterile spikelet subulate, resembling the —— 
of the empty glumes, gs somewhat lanceolate at the base. Flowering glume 
of the fertile spikelet about 8 or 9 mm. long, linear-lanceolate, sisi on the 
back, smooth and A below, keeled and seabrous above, 3-awned, the middle 
awn stout, rigid, scabrous, 5 to 6 em. long, the lateral ones slender,3 to 8 mm. 
long. Palea as long as the flowering glume, acute or bicuspidate. Internodes 
of the rachis (€ spatulate above, smooth and shining, scabrous along 
he margins, 4 to 5 m 
Ty pe: de collected ps “Coville and Funston, No. 1121, Tehachapi Valley, Kern 
yy, Cal., June 25, 1891. Other specimens which may be referred to this are 
Penis. No 225 Sonoma G 3 ; a specimen collected by Bolander at San 
a, 
No. 617, Clinton, Amador County, June 30, 1893 a specimen marked “J. A. Allen, 
California;” and L. Schoenefeldt, No. 3439, Nackos esie Valley, Lower 5 
une 
It differs Punt Sifanion polyantheric and S. breviaristatum in the very much Mee and 
more rigid, erect or ascending awns of the empty pre and the leaves hirsute 
dorsally toward the base and along the nerves abov 
