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Northern Prairie Wildlife Research Center

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Aquatic and Wetland Vascular Plants of the Northern Great Plains

Agrostis L. -- Bentgrass

Rhizomatous (sometimes stoloniferous) or tufted perennials with soft, flat leaves and usually open panicles. Spikelets 1-flowered, disarticulating above the glumes; glumes subequal, acute to acuminate, scabrous on the keel, 1-nerved; floret exceeded by both glumes; lemma lanceolate, obtuse, more delicate than the glumes, very faintly 3-nerved; palea absent or rudimentary, or to 2/3 as long as the lemma, scarious.

Lead Characteristic Go To
1 Palea absent or rudimentary; plants usually lacking rhizomes or stolons. Lead 2
1 Palea present, 1/2 to 2/3 as long as the lemma; plants with rhizomes and/or stolons. A. stolonifera
2 Panicle open and diffuse, the widely spreading main branches branched and bearing spikelets only above the middle. A. hyemalis
2 Panicle narrow and condensed, the strongly ascending main branches branched and bearing spikelets to near their bases. A. exarata

63. Poaceae, the Grass Family
2. Agrostis L. -- Bentgrass
1. Agrostis exarata Trin. -- Spikebent
2. Agrostis hyemalis (Walt.) B.S.P. -- Ticklegrass
3. Agrostis stolonifera L. -- Redtop

Return to Family -- Poaceae - The Grass Family
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