Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
Calamagrostis Adans. -- Reedgrass
Perennials of moderate to tall stature, tufted from rhizomes; leaves
green or glaucous, scabrous; sheaths mostly not overlapping, glabrous;
ligule prominent, membranous, elongate, usually lacerate, 3-6 mm long.
Panicles loose and open or dense and contracted, the branches spreading
or ascending, scabrous. Spikelets 1-flowered, often purplish, disarticulating
above the glumes; glumes subequal, the first shorter than the second
or occasionally vice versa, lanceolate, acute to acuminate, the first glume
1-nerved, the second 3-nerved; lemma shorter and more delicate than the
glumes, lanceolate, cleft or erose at the narrowed tip, 5-nerved, awned from
the back, the awn diverging from near or below the middle of the back, nearly
reaching to slightly exceeding the tip of the lemma, the base of the lemma (callus)
bearded with a tuft of copious hairs, these shorter than to equaling the lemma;
palea shorter than the lemma, membranous and appearing nerveless. Grain
brown, ellipsoid, 1-1.5 mm long.
||Panicle rather loose and open, the branches ascending
to spreading; leaves rather lax, flat, 2-6 mm wide.
||Panicle contracted, dense or interrupted, the
branches short, ascending to appressed; leaves stiff, often involute,
1-4 mm wide when flat.
63. Poaceae, the Grass Family
6. Calamagrostis Adans. -- Reedgrass
- 1. Calamagrostis canadensis (Michx.)
Beauv. -- Bluejoint reedgrass
- 2. Calamagrostis stricta (Timm) Koel.
-- Northern reedgrass
Return to Family -- Poaceae - The Grass Family
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