Calamagrostis canadensis var. canadensis

Synonyms: Calamagrostis scribneri Calamagrostis canadensis var. typica Calamagrostis canadensis var. robusta Calamagrostis canadensis var. pallida
Treatment appears in FNA Volume 24. Treatment on page 728.

Culms (50) 65-80 (160) cm, often branching above the base, smooth or slightly scabrous beneath the panicles; nodes (2) 3-4 (6). Sheaths smooth or scabrous; collars usually scabrous, rarely smooth or hairy; ligules (1) 4-6 (12) mm; blades (11) 16-31 (41) cm long, (2) 2.5-5 (8) mm wide, adaxial surfaces usually strongly scabrous, rarely smooth, often glaucous. Panicles (9) 11-14 (19) cm long, (1) 2-3 (7) cm wide, often contracted when young, usually purplish, sometimes greenish to straw-colored; branches 2.9-4.5 (5.7) cm. Spikelets 2.5-3.5 (4) mm; rachilla prolongations 0.5-1 mm, hairs 2.5-3.2 mm. Glumes rounded to broadly keeled, smooth or scabrous, often only the keels scabrous, prickles straight, midveins raised, lateral-veins obscure to prominent, apices usually acute, rarely acuminate; callus hairs (1.7) 2.5-2.9 (3.1) mm, (0.7) 0.9-1.1 (1.4) times as long as the lemmas; lemmas (2.2) 2.5-3.1 (4) mm, 0-1.6 mm shorter than the glumes; awns 0.9-2.6 mm, attached to the lower (1/10) 1/5 – 2/5 (7/10) of the lemmas, usually not exserted, usually straight; anthers (0.8) 1.2-1.3 (2) mm. 2n = 42-66.

Distribution

Wash., Del., Wis., W.Va., Wyo., N.H., N.J., N.Mex., N.C., Nebr., Tenn., N.Y., Pa., Alaska, Nev., Va., Colo., Alta., B.C., Man., N.B., Nfld. and Labr., N.S., N.W.T., Ont., P.E.I., Que., Sask., Yukon, Vt., Ill., Ga., Ind., Iowa, Ariz., Calif., Idaho, Conn., Maine, Mass., Kans., Md., Mich., N.Dak., Ohio, Utah, Mo., Minn., R.I., Mont., Oreg., S.Dak.

Discussion

Calamagrostis canadensis var. canadensis is wide-spread throughout the range of the species, except on the arctic islands, Greenland, and the adjacent mainland.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

membranous +  and scarious +
0.8 cm8 mm <br />0.008 m <br /> (?) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Acuminate (?) +  and Acute (?) +
Kendrick L. Marr +, Richard J. Hebda +  and Craig W. Greenef +
(Michx.) P. Beauv. +
1 (?) +  and 3 (?) +
straight +
attached +
exserted +
indistinct +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
16 cm160 mm <br />0.16 m <br /> (31 cm310 mm <br />0.31 m <br />) +
not evident +
flat +  and involute +
2.5mm;5mm +
5.7 cm57 mm <br />0.057 m <br /> (?) +
appressed;more or less drooping +
spikelike +
(0.7)0.9-1.1(1.4) times as long as the lemmas +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
hairy +  and smooth +
ascending +  and erect +
65 cm650 mm <br />0.65 m <br /> (80 cm800 mm <br />0.8 m <br />) +
not woody +
Wash. +, Del. +, Wis. +, W.Va. +, Wyo. +, N.H. +, N.J. +, N.Mex. +, N.C. +, Nebr. +, Tenn. +, N.Y. +, Pa. +, Alaska +, Nev. +, Va. +, Colo. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Vt. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Calif. +, Idaho +, Conn. +, Maine +, Mass. +, Kans. +, Md. +, Mich. +, N.Dak. +, Ohio +, Utah +, Mo. +, Minn. +, R.I. +, Mont. +, Oreg. +  and S.Dak. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
subtending +
rounded +  and broadly keeled +
subequal +
membranous +
sparse +  and abundant +
uncinate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
obscure +  and prominent +
lanceolate +  and ovate +
0 cm0 mm <br />0 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
lacerate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
membranous +
inconspicuous +
lanceolate +
6 (?) +  and 2 (?) +
concealed +  and prominent +
3 +  and 4 +
2 +  and 1 +
hairy +  and glabrous +
2-keeled +
greenish +  and straw-colored +
11cm +  and 14cm +
spikelike +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
dry +  and fleshy +
1 +  and 60 +
compressed +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Calamagrostis scribneri +, Calamagrostis canadensis var. typica +, Calamagrostis canadensis var. robusta +  and Calamagrostis canadensis var. pallida +
Calamagrostis canadensis var. canadensis +
Calamagrostis canadensis +
variety +
membranous +
parallel +  and converging +
obscure +  and prominent +
aquatic +  and terrestrial +