Morphology

A rhizomatous, perennial grass with culms 60-150 cm tall and 2.5-5 mm thick. Sheaths retrorsely scabridulous to scabrous, keeled. Ligules 2-6 mm. Blades 8-36 cm long, 3-8 mm wide, abaxial surfaces smooth or scabrous, adaxial surfaces scabridulous to scabrous.

Panicles 10-30 cm long, 10-20 cm wide. Branches 7-20 cm long. Spikelets 4-8 mm long, (2.5)3-5 mm wide, laterally compressed, with 2-10 florets. Lower glumes 0.6-2.4 mm. Upper glumes 1.5-2.5 mm. Lemmas 1.8-4 mm, 5-7-veined. Paleas 0.1-0.8 mm shorter than lemmas. Anthers 2, 0.4-0.5 mm.

Name/Synonymy Info

Glyceria canadensis (Michx.) Trin., Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 1:366 (1830). Briza canadensis Michx., Fl. bor.-amer. 1:71 (1803). HOL: P (P-MICH); Canada; A. Michaux.

Glyceria canadensis (Michx.) Trin.var. canadensis, Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 1:366 (1830). Briza canadensis Michx., Fl. bor.-amer. 1:71 (1803); Megastachya canadensis Michx. ex Roemer & Schultes, Syst. veg. 2:593 (1817); Nevroloma canadensis (Michx.) Raf., J. Phys. Chim. Hist. Nat. Arts 89:106 (1819); Poa canadensis (Michx.) Torrey, Fl. n. middle United States 1:112 (1823); Panicularia canadensis (Michx.) Kuntze, Revisio gen. pl. 2:783 (1891). HOL: P (P-MICH); Canada; A. Michaux.

Glyceria canadensis var. laxa (Scribner) Hitchc., Amer. J. Bot. 21:128 (1934). Panicularia laxa Scribner, Bull. Torrey Bot. Club 21:37 (1894); Glyceria laxa (Scribner) Scribner in E.L. Rand & Redfield, Fl. Mt. Desert Isl. 180 (1894). HOL: NY 381567; U.S.A., Maine: Mt. Desert Island, Clement's Brook, Seal Harbor; 16 Aug 1891; E.L. Rand.

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References

M.E. Barkworth & L.K. Anderton. 2007. Glyceria in Flora of North America, volume 24. Oxford University Press.

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