Morphology

A rhizomatous, perennial grass with culms 75-150 cm tall and 2.5-8 mm thick. Sheaths scabridulous or hirtellous, not or weakly keeled. Ligules 2.5-4(6) mm. Blades19-40+ mm long, 6-12(15) mm wide.

Panicles 15-30 cm long, 12-30 cm wide. Branches 12-17 cm long. Spikelets 3-6 mm long, 1.5-2.8 mm wide, laterally compressed, with 3-4(6) florets. Lower glumes 0.7-1.5 mm. Upper glumes 1-1.5 mm. Lemmas 1.7-2.2 mm, 5-7-veined. Anthers 2, 0.5-0.8 mm.

Name/Synonymy Info

Glyceria elata (Nash) M.E. Jones, Bull. Montana State Univ., Biol. Ser. 15:17 (1910).  Panicularia elata Nash in Rydb., Mem. New York Bot. Gard. 1:54 (1900); Panicularia nervata subsp. elata (Nash) Piper, Contr. U.S. Natl. Herb. 11:140 (1906); Glyceria nervata var. elata J.K. Henry, Fl. s. Brit. Columbia 38 (1915). HOL: NY 381564; U.S.A., Montana: Sweet Grass Canyon, Crazy Mountains, alt. 6000-7000 feet; 8 Sep 1896; J.H. Flodman 176.

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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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