Morphology

A rhizomatous, perennial grass with culms 73-182 cm tall, to 8 mm thick. Ligules 5-16 mm. Blades 18-32 cm long, 2-15 mm wide.

Panicles 15-60 cm long, 1-3.5 cm wide. Branches 3-17 cm long. Spikelets (6.5)10-23 mm long, 1-3 mm wide, with 8-16 florets. Lower glumes (0.3)1.5-3.7 mm. Upper glumes (1.9)2.3-5.2 mm. Lemmas 2.4-4.8 mm. Anthers 3, 0.5-1.8 mm.

Name/Synonymy Info

Glyceria septentrionalis Hitchc., Rhodora 8:211 (1906). TYPE: U.S.A., New Jersey: Guttenberg; 6 Jun 1895; W.M. Van Sickle.

Glyceria septentrionalis Hitchc. var. septentrionalis, Rhodora 8:211 (1906). Panicularia septentrionalis (Hitchc.) E.P. Bicknell, Bull. Torrey Bot. Club 35:196 (1908); Panicularia fluitans var. septentrionalis (Hitchc.) Farw., Rep. (Annual) Michigan Acad. Sci. 21:353 (1920). TYPE: U.S.A., New Jersey: Guttenberg; 6 Jun 1895; W.M. Van Sickle.

Glyceria septentrionalis var. arkansana (Fernald) Steyerm. & C. Kučera, Rhodora 63:24 (1961). Glyceria arkansana Fernald, Rhodora 31:49 (1929). HOL: GH 23798; U.S.A., Arkansas: Lincoln County, Varner, common in swamp; 29 Apr 1898; B.F. Bush 9.

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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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