Glyceria canadensis var. canadensis

Common names: Canadian glyceria Canadian mannagrass Rattlesnake mannagrass Glycerie du Canada
Endemic
Treatment appears in FNA Volume 24. Treatment on page 79.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Spikelets 5-8 mm, with 4-10 florets. Lower glumes 1.6-2.4 mm; upper glumes 1.8-2.5 mm, acute; lemmas 2.4-4 mm. 2n = 60.

Discussion

Glyceria canadensis var. canadensis grows through¬out the range of the species. The spikelets bear some resemblance to those of Bromus briziformis, otherwise known as rattlesnake brome, hence the vernacular name "rattlesnake mannagrass".

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

membranous +  and scarious +
scabridulous +  and scabrous +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
entire +  and truncate +
Notched (?) +, Prow--shaped (?) +, Acute (?) +  and Rounded (?) +
Mary E. Barkworth +  and Laurel K. Anderton +
(Michx.) Trin. +
1 (?) +  and 3 (?) +
basal +  and apical +
keeled +  and rounded +
pseudopetiolate +  and branching +
persistent +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
8 cm80 mm <br />0.08 m <br /> (36 cm360 mm <br />0.36 m <br />) +
folded +  and flat +
3mm;8mm +
Canadian glyceria +, Canadian mannagrass +, Rattlesnake mannagrass +  and Glycerie du Canada +
not cormous +  and rooting +
60 cm600 mm <br />0.6 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
20 cm200 mm <br />0.2 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
not woody +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Conn. +, N.J. +, N.Y. +, Wash. +, Del. +, D.C. +, Wis. +, W.Va. +, N.H. +, N.C. +, Pa. +, R.I. +, Va. +, Mass. +, Maine +, Vt. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ill. +, Ind. +, Md. +, Ohio +, Minn. +, Mich. +  and Oreg. +
0 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
sometimes longer +
4 +  and 10 +
compressed +
reduced +
shorter than to longer than the adjacent lemmas +
subtending +
acute +  and obtuse +
much smaller +
scarious +  and membranous +
narrowing +
5-11-veined +
uncinate +
hairy +, glabrous +, scabrous +  and smooth +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +  and thinly coriaceous +
lacerate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
inconspicuous +
lanceolate +
ovate +  and rectangular +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
slightly longer +
reduced +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
10cm +  and 30cm +
pyramidal +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
dry +  and fleshy +
retrorsely scabridulous +  and scabrous +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
15 +  and 60 +
oval +  and compressed +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
3mm +  and 5mm +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Poa canadensis +
Glyceria canadensis var. canadensis +
Glyceria canadensis +
variety +
membranous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
raised +  and evident +
aquatic +  and terrestrial +