Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Glyceria R. Br. -- Mannagrass
Rhizomatous perennials with flat leaf blades and open panicles; sheaths
tubular, the margins united for most of their length. Spikelets few-
to many-flowered, ovoid to linear, subterete or slightly compressed, disarticulating
above the glumes and between the florets; glumes unequal, acute or obtuse,
scarious, 1-nerved; lemmas rounded on the back, usually obtuse and scarious
at the tip, 7-nerved; palea about equaling the lemmas, nerved marginally
and winged backward toward the grain; stamens 3 or 2.
Church, G. L. 1949. A cyto-taxonomic study of Glyceria and
Puccinellia. Amer. J. Bot. 36:155-165.
||Spikelets linear, mostly 6- to 13-flowered, 9-15
mm long; panicle branches stiff, erect to ascending.
||Spikelets ovoid to narrowly ovoid, 3- to 7(9)-flowered,
2.5-7 mm long; panicle branches lax, spreading or drooping at maturity.
||First glume 1-2 mm long; lemmas 2.5-3 mm long;
panicle 20-35 cm long.
||First glume 0.5-1 mm long; lemmas 1.5-2 mm long;
panicle 6-15(20) cm long.
63. Poaceae, the Grass Family
13. Glyceria R. Br. -- Mannagrass
- 1. Glyceria borealis (Nash) Batch.
-- Northern mannagrass
- 2. Glyceria grandis S. Wats. -- American
- 3. Glyceria striata (Lam.) Hitchc.
-- Fowl mannagrass
Return to Family -- Poaceae - The Grass Family
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