USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

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
Return to Contents

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/genagros.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:37:45 EST
Menlo Park, CA [caww54]