79 
§ 1. DEYEUXIA Hack. 
Hairs of the callus seldom exceeding the glumes, sometimes very 
short; the sterile pedicel also very hairy. 
A. Panicle small, loose, and spreading, with few rays. 
1. Calamagrostis deschampsioides Trin. (Bot. Cal. 1. p. 280.) Culms tufted 
from a decumbent base, 6 to 10 inches high, smooth; leaves flat or somewhat con- 
volute, smooth, the lower 4 to 6 inches long, the upper about lL inch; panicle small 
ovate or pyramidal; rays mostly in pairs or threes, divided above the middle, 
and bearing about 5 flowers; spikelets 2 lines or more, purple tinged ; empty glumes 
equal, broadly lanceolate, acute; floral glume about as long as the empty ones; acu- 
minate 2-toothed, bearing above the middle a stout awn, which slightly, or one-third, 
exceeds its glume; hairs of the callus and of the rudiment one-half as long as the 
glume or less; palet equaling the floral glume.—Alaska and Aretie America. 
2. C. Breweri Thurb. (Bot. Cal. 1. p. 220.) Culms densely tufted, 6 to 15 inches 
high, erect, very slender; radical leaves 2 to 3 inches long, setaceously-involute, 
minutely scabrous above, the upper very short; upper ligule acute, 2 lines long; 
sheaths close, striate; panicle loose, 1 to 3 inches long, purple rays solitary or in 
twos or threes, spreading, short, 1- to 3-flowered at the extremities; spikelets 14 to 2 
lines long, lanceolate, acute; floral glume equal to empty ones, with acute or lacerate 
teeth at the apex, with a short, minute tuft of hairs at the base, awned from near the 
base, exserted nearly a line beyond the apex; palet nearly equaling its glume, 2- 
toothed at apex.—Sierras of California (Bolander, Lrewer and Lemmon). 
B. Panicle larger with long spreading or somewhat contracted rays. 
3. C. Howellii Vasey Bot. Gaz. vi. p. 271. Culms densely tufted, 10 
to 20 inches high, erect, or somewhat geniculate below, smooth; radical leaves 
loosely setaceous involute, firm but not rigid, in length nearly equaling or even 
exceeding the culm, ligule conspicuous, about 14 lines long, scarious, culm leaves 
about 3, narrow or filiform, 4 to 8 inches long, the upper one equaling the culm; 
panicle pyramidal, 2 to 4 inches long, loose and spreading, rays mostly in fives, lower 
ones 1 to 1} inches iong, numerously-flowered above the middle ; spikelets pale-green 
or purple-tinged ; outer glumes lanceolate, acute, 2} to 3 lines long, nearly equal, 
membranaceous, 1-nerved or the upper distinctly 3-nerved, flowering glume slightly 
shorter than the outer ones, ovate-lanceolate, acute, 4-nerved above, the apex with 
2 mucronate pointed teeth, the conspicuous strong awn inserted about the lower 
third, half an inch long, palet rather shorter than its glume, bidentate at the apex, 
basal hairs about half as long as the flower, those of the rudiment rather longer.— 
Oregon and Washington. 
A well marked. and handsome species, remarkable for the long setaceous leaves, 
both radical and cauline, and for the open panicle and conspicuous awns, It was 
named for the discoverer, 7. J. Howell, Oregon. 
4. C. pallida Vasey & Scribn. Culms 4 feet high, with 6 or 7 nodes; leaves 2 to 
4 lines wide, 6 to 9 inches long; sheaths striate, shorter than the internodes; ligule 
about 2 lines long, lacerate at apex; panicles 6or7 inches long ; loose and spreading, 
whitish or very pale, the rays capillary, mostly in fives, the longer 2 inches long, flow- 
ering near the extremity of the branchlets; spikelets 1 to 14 lines long, somewhat 
unequal, long acuminate-pointed, pedicels, branches and midnerve of glumes scab- 
rous; floral glume one-fourth shorter than the empty ones, very thin, acutely toothed 
at apex; hairs of the callus and rudiment about equaling the glume, very fine; awn 
slender and short, attached near the apex and extending half a line beyond.—Wash- 
ington (Suksdorf.) 
5. C. Bolanderi Thurb. Bot. Cal. mu. p, 280. Culms 2 to 3 feet high, 
geniculate below, more or less scabrous throughout; leaves, 4 or 5, flat, 6 to 10 
