a 
‘ELYMUS: GRAMINE 779 
leaves 10-20 inches long, 2-4 lines wide, smooth beneath, scabrous above, 
peouelly tapering into very acute pungent tips: spikes linear, sometimes 
rancbing and panicled: spikelets 3-6-flowered, 6-12 lines long, villous 
with long whitish or yellowish hairs: empty glumes lanceolate, subaristate- 
pointed: flowering glumes broadly lanceolate, very acute, densely silky- 
villous on the back: flowering glumes 6-7 lineslong. On sand dunes along 
the Columbia river near the Dalles. 
E. dasystachys Trin. Ledeb. Fl. Alt. i, 120. Stems stout, smooth, 
2-3 feet high, from stout creeping rootstocks: sheaths smooth or scabrous, 
shorter than the internodes: ligules very shurt: leaves rigid, more or less 
involute, pungent-pointed, 4-18 inches long, 2-4 lines wide: spike strict, 3-6 
inches long: spikelets 2 at each joint, 10-12 lines long, closely imbricated, 
4-7-flowered: empty glumes, equal, 7-8 lines long, more or less cilate, 
short-awned, narrowly lanceolate 3-nerved: flowering glumes, more or 
less pubescent, slightly ciliate, 10-12 lines long, short-awned. Washington 
to Alaska and Montana. 
E. littoralis Turcz. Stems rather stout and somewhat rigid, erect, 
3-4 feet high, glabrous: sheaths glabrous, the lower ones scarious, loose 
and sometimes bladeless: ligules very short, minutely ciliate: leaves 10-20 
inches long, 2-3 lines wide, glabrous beneath, strongly strigose-pubescent 
above, very long acuminate-pointed, becoming involute: spikes 10-12 
inches long, rather loosely flowered, often branched : spikelets 5-9-flowered : 
empty glumes narrowly lanceolate, scabrous on the keel, especially toward 
_the rigid subulate apex: flowering glumes 7-9 lines long, lanceolate, very 
acute, or subaristate-pointed, 5-nerved, scarious margined rather densely 
pubescent on the back below, the upper third glabrous. Eastern Wash- 
ington to Idaho. 
E. condensatms Pres! Rel. Hzenk. i, 265. Stems erect, smooth, 2-10 
feet high: sheaths glabrous, the upper ones shorter than the internodes: 
ligules 2-3 lines long, truncate: leaves 6-20 inches long, 3-11 lines wide, 
scabrous above: spike 4-16 inches long, usually stout, strict, often interrupt- 
ed below, sometimes branched at the base: spikelets 3-6-flowered: empty 
‘glumes. subulate, 474-6 lines long, 1-nerved, usually rough: flowering 
glumes 4-5 lines long, generally awn-pointed, usually scabrous. Common 
from eastern Oregon and Washington to Brit. Columbia, Nebraska, Arizona 
and California. 
E. ‘ triticoides Buckl. Proc. Acad. Phila. 99. Stems rather slender, 
2-4 feet high: ligules very short: leaves 7-12 inches long, narrow, often — 
involute, the upper equalling or exceeding the stem: spikes 3-8 inches long, 
erect: spikelets 4-8-flowered, sometimes glaucous: empty glumes linear- 
lanceolate, rigid, long-pointed, 4-6 lines long: flowering glumes firm, lan- 
_ceolate, acuminate or short-awned, 7-nerved. Washington to California 
and the Rocky Mountains. 
EK. glaucus Buckl. 1. c. E. Americanus Vasey & Scribn. Stems 
erect, 2-5 feet high, smooth: sheaths often shorter than the internodes, 
usually glabrous: ligules 1 line long or less: leaves 4-12 inches long, 2-8 lines 
wide; smooth beneath, sometimes scabrous above: spike 5-8 inches long, 
slender: spikelets appressed to the rachis, 3-6 flowered: empty glumes 
narrowly lanceolate, 4-6 lines long, acuminate or awn-pointed, rigid, 3-5- 
nerved: flowering glumes smooth or slightly scabrous, 5-6 lines long: bear- 
ing a slender straight awn 6-9 lines long. In moist soil California to Brit. 
Columbia, Ontario, Michigan and Arizona. 
E. Canadensis L. Sp. 83. Stems erect, 2-5 feet high, smooth: sheaths 
usually shorter than the internodes: ligules very short: leaves 4-12 inches 
long, 5-10 lines wide, scabrous, sometimes glaucous: spike 4-12 inches 
long, stout, often modding: spikelets spreading, 3-5-flowered: empty 
glumes narrowly lanceolate, or subulate, rigid, 3-5-nerved ,4-8 lines long, 
