Morphology
A perennial grass with culms 20-80(100) cm tall, (1.5)2-3.5 mm thick. Ligules 1-4 mm. Blades 12-30 cm long, 2-6 mm wide.
Panicles 6-25 cm long, 2.5-21 cm wide. Branches 5-13 cm long. Spikelets 1.8-4 mm long, 1.2-2.9 mm wide, with 3-7 florets. Lower glumes 0.5-1.2 mm. Upper glumes 0.6-1.2 mm. Lemmas 1.2-2 mm. Anthers 2, (0.2)0.4-0.6 mm.
Name/Synonymy Info
Glyceria striata (Lam.) Hitchc., Proc. Biol. Soc. Wash. 41:157 (1928). Poa striata Lam., Tabl. encycl. 1:183 (1791); Panicularia striata (Lam.) Hitchc. in Small, Man. s.e. flora 132 (1933). Poa sulcata Roemer & Schultes, Syst. veg. 2:550 (1817), non Lag. (1816). Poa lamarckii Kunth, Enum. pl. 1:362 (1833). TYPE: U.S.A., Virginia and "Carolina".
Poa nervata Willd., Sp. pl. 1:389 (1797); Glyceria nervata (Willd.) Trin., Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 1:365 (1830); Panicularia nervata (Willd.) Kuntze, Revisio gen. pl. 2:783 (1891); Glyceria aquatica subsp. nervata (Willd.) R.C.V. Douin in Bonnier & R.C.V. Douin, Fl. ill. France 12:24 (1934). TYPE: North America.
Poa striata Michx., Fl. bor.-amer. 1:69 (1803), nec Lam. (1791), nec Thunb. (1794). Poa lineata Pers., Syn. pl. 1:89 (1805). Glyceria michauxii (Michx.) Kunth, Révis. gramin. 1:118 (1829). HOL: P (P-MICH); U.S.A.: Pennsylvania and Virginia [published locality; specimen labelled "Pennsylvania, Virginia, and Carolina"]; A. Michaux.
Poa parviflora Pursh, Fl. Amer. sept. 1:80 (1813) [title page 1814], non R. Br. (1810). TYPE: U.S.A.: New York to Virginia.
Briza canadensis Nutt., Gen. N. Amer. pl. 1:69 (1818), non Michx. (1803). TYPE: Canada and [U.S.A.,] Pennsylvania.
Glyceria neogaea Steudel, Syn. pl. glumac. 1:285 (1854). TYPE: Canada, "Newfoundland" [Newfoundland and Labrador].
Panicularia nervata var. stricta Scribner in A. Nelson, Bull. Div. Agrostol. U.S.D.A. 13:44 (1898); Glyceria nervata var. stricta (Scribner) Scribner ex Hitchc. in A. Gray, Manual, ed. 7, rev. B.L. Rob. & Fernald, 159 (1908); Glyceria nervata forma stricta (Scribner) House, Bull. New York State Mus. Nat. Hist. 254:118 (1924); Glyceria striata var. stricta (Scribner) Fernald, Rhodora 31:47 (1929); Glyceria striata subsp. stricta (Scribner) Hultén, Acta Univ. Lund, n.s., 38:232 (1942); Glyceria striata forma stricta (Scribner) B. Boivin, Naturaliste Canad. 94:524 (1967). SYN: US 749358; U.S.A.: Beaver Basin, Colorado-Wyoming state line; 22 Jul 1897; A. Nelson 3818.
Panicularia nervata var. rigida Nash in Rydb., Mem. New York Bot. Gard. 1:54 (1900); Glyceria nervata var. rigida (Nash) Lunell, Amer. Midl. Naturalist 4:223 (1915); Panicularia rigida (Nash) Rydb., Fl. Rocky Mts. 83 (1917); Glyceria rigida (Nash) Rydb., Fl. Plains N. Amer. 122 (1932), non (L.) Sm. (1824). HOL: NY 381569; U.S.A., Montana: Lima; 29 Jun 1895; P.A. Rydberg 2068.
Panicularia nervata var. parviglumis Scribner & Merr. in Scribner, Circ. Div. Agrostol. U.S.D.A. 30:8 (1901). TYPE: U.S.A., Wisconsin: Racine, Wolmot Road; 26 Jun 1900; S.C. Wadmond 36.
Glyceria latifolia J.S. Cotton, Bull. Torrey Bot. Club 29:573 (1902). TYPE: U.S.A., Washington: Okanogan County, Railroad Creek; Sep 1897; A.D.E. Elmer 721.
Panicularia nervata var. filiformis Farw., Rep. (Annual) Michigan Acad. Sci. 20:168 (1919). TYPE: U.S.A., Michigan: Dearborn, low wet grounds; 8 Jul 1917; O.A. Farwell 4514.5.
Panicularia nervata var. purpurascens Farw., Rep. (Annual) Michigan Acad. Sci. 20:168 (1919). TYPE: U.S.A., Michigan: Utica; 10 Jun 1917; O.A. Farwell 4495.5.
Panicularia nervata var. viridis Farw., Rep. (Annual) Michigan Acad. Sci. 22:180 (1921). TYPE: U.S.A., Michigan: Ypsilanti; 15 Jun 1919; O.A. Farwell 5234.
References
M.E. Barkworth & L.K. Anderton. 2007. Glyceria in Flora of North America, volume 24. Oxford University Press.
