Calamagrostis koelerioides
Calamagrostis foliosa
dense-pine reed grass, fire reedgrass
leafy reed grass
(26)60-85(120) cm, unbranched, slightly scabrous;
nodes 2-3(5).
(25)30-60(70) cm, unbranched, mostly smooth, sparsely scabrous beneath the panicles;
nodes 1-3.
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.
and collars usually smooth;
ligules (3)4-6(7) mm, usually truncate to obtuse, usually entire, sometimes lacerate;
blades (10)11-21(27) cm long, (1.5)2-2.5(4) mm wide, mostly basal, flat or involute, abaxial surfaces smooth, adaxial surfaces slightly scabrous, glabrous or 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.
(9)10-12(19) cm long, 1-1.5(2.5) cm wide, erect to slightly nodding, contracted, branches sometimes slightly spreading at the base, usually pale green, rarely pale purple;
branches (2)3-4(5) cm, sparsely scabrous, spikelet-bearing to the base.
(4)4.5-6(7) mm;
rachilla prolongations 1.5-2.5(3) mm, hairs 1.5-2 mm.
(7)8-11 mm;
rachilla prolongations (1.5)2(3) mm, prominently bearded, hairs 2-3 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.
keeled, keels smooth or scabrous, lateral veins prominent, apices acuminate;
callus hairs 2.5-3(4) mm, 0.4-0.6 times as long as the lemmas, abundant;
lemmas (5)6-7(8) mm, (0.5)1-2(3) mm shorter than the glumes;
awns 12-14(17) mm, attached to the lower 1/10 – 2/5 of the lemmas, exserted more than 2 mm, easily distinguished from the callus hairs, bent;
anthers 3-4.5 mm.
= 28.
= 28.
Calamagrostis koelerioides
Calamagrostis foliosa
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 foliosa grows in coastal scrub and forest, and on rocks and crevices of bluffs and cliffs, from sea level to 1200 m. It is known only from Del Norte, Humboldt, Mendocino, and Sonoma counties in California.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
