Calamagrostis koelerioides
Calamagrostis breweri
dense-pine reed grass, fire reedgrass
Brewer's reedgrass, short hair reed grass
(26)60-85(120) cm, unbranched, slightly scabrous;
nodes 2-3(5).
(18)29-54 cm, unbranched, smooth beneath the panicles;
nodes 1-2(3).
and collars usually scabrous, rarely smooth, glabrous;
ligules (1.5) 2-4.5(7) mm, truncate to obtuse, entire or sometimes lacerate;
blades (2)9-20(30) cm long, (2)2.5-4.5(8) mm wide, flat, slightly scabrous, adaxial surfaces glabrous or sparsely hairy.
basally concentrated;
sheaths and collars smooth or slightly scabrous;
ligules 1.7-4.1(6) mm, usually lacerate;
blades (2)10-15 cm long, 0.9-1.7 mm wide when flat, 0.4-0.6 mm in diameter when dry and involute, abaxial surfaces scabrous, adaxial surfaces sparsely hairy.
(4)10-13(16) cm long, about 1 cm wide, contracted, erect to slightly nodding, often slightly interrupted towards the base, straw-colored or pale green to pale purple;
branches (1.1)2.8-4(6) cm, scabrous, spikelet-bearing to the base.
(4)5.7-8.5 cm long, 0.7-5.2 cm wide, usually open, sometimes contracted, mostly erect, dark purple;
branches (1)2-3(3.5) cm, smooth, spikelets usually confined to the ends of the branches.
(4)4.5-6(7) mm;
rachilla prolongations 1.5-2.5(3) mm, hairs 1.5-2 mm.
3-5 mm;
rachilla prolongations about 1.5 mm, hairs 1.5-2 mm.
slightly keeled, keels smooth or slightly scabrous distally, lateral veins visible but not prominent, apices acute;
callus hairs 1.5-2 mm, 0.3-0.4 times as long as the lemmas, sparse;
lemmas (3.5)4-5(6) mm, 0.5-1.5 mm shorter than the glumes;
awns 4-5.5 mm, attached to the lower 1/10 – 1/5 of the lemmas, exserted, sometimes barely so, stout, distinguishable from the callus hairs, bent;
anthers 2-3.5 mm.
rounded, usually smooth, occasionally scabrous at the apices, lateral veins obscure, apices acute to attenuate;
callus hairs 0.3-1.2 mm, 0.2-0.5 times as long as the lemmas, sparse;
lemmas 2.5-4 mm, 0.5-1 mm shorter than the glumes;
awns 3.5-5.5 mm, attached to the lower 1/10 – 3/10 of the lemmas, exserted, bent;
anthers 1.3-2.6 mm.
= 28.
= 42.
Calamagrostis koelerioides
Calamagrostis breweri
Calamagrostis koelerioides grows in mountain meadows, chaparral, and Jeffrey pine and blue spruce forests, and on talus slopes, dry hills, and ridges, occasionally on serpentine soils, at 50-2100 m. It extends from Washington south to southern California and east to Montana and western Wyoming.
Calamagrostis koelerioides is similar to C. rubescens (p. 723). The two have traditionally been distinguished by the presence of hairs on the leaf collars in C. rubescens, and their absence in C. koelerioides; a more reliable differentiation is the longer lemmas, glumes, and awns of C. koelerioides compared to C. rubescens.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Calamagrostis breweri grows in moist subalpine and alpine meadows, lake margins, and stream banks, at 1700-2600 m, from Mount Hood in Oregon south to north of the Carson Pass area in Alpine and Amador counties, California. It differs from C. bolanderi (p. 719) in having basally concentrated leaves.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
