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

Muhlenbergia Schreb. -- Muhly


Solitary or tufted perennials, many producing creeping, scaly rhizomes; culms erect or decumbent at the base, often branching from the nodes; leaf blades rather short relative to width, scabrous; sheaths often not overlapping, the internodes exposed; ligules membranous. Inflorescence usually a narrow, contracted, spikelike panicle (open and diffuse in M. asperifolia), terminal, sometimes axillary panicles also produced. Spikelets 1-flowered, disarticulating above the glumes, the glumes remaining after the florets have fallen; glumes unequal to subequal, keeled or rounded on the back, acute to acuminate or awned from the tip, 1-nerved; floret equal to or exceeding one or both glumes (excluding awns, if present); lemma ovate-lanceolate or narrowly lanceolate, acute to acuminate, rarely awned, strongly 3-nerved, pilose at the base in some spp.; palea nearly as long as the lemma, 2-nerved.

Reference:
 
Pohl, R. W.  1969. Muhlenbergia subgenus Muhlenbergia (Gramineae) 
     in North America.  Amer. Midl. Naturalist 82:512-542.
Lead Characteristic Go To
1 Panicle open and diffuse, about as broad as long, the filiform branches widely spreading. M. asperifolia
1 Panicle narrow and contracted, the branches short, ascending to appressed. Lead 2
2 Leaf blades usually involute, 0.2-1 mm wide; panicles few-flowered, not glomerulate. M. richardsonis
2 Leaf blades flat, 2-6(8) mm wide; panicle usually densely flowered and glomerulate. Lead 3
3 Glumes awned, much surpassing the floret; anthers 0.5-1.5 mm long. Lead 4
3 Glumes acuminate or short-awned, usually not to shortly surpassing the floret; anthers 0.3-0.5 mm long. M. mexicana
4 Internodes of the culm mostly smooth and shiny; main culms usually branched above; anthers 0.5-0.8 mm long; ligules 0.6-1.5 mm long. M. racemosa
4 Internodes of the culm puberulent and dull; main culms unbranched or branched from the base; anthers 0.8-1.5 mm long; ligules 0.2-0.6 mm long. M. glomerata

63. Poaceae, the Grass Family
18. Muhlenbergia Schreb. -- Muhly
1. Muhlenbergia asperifolia (Nees & Meyen) Parodi -- Alkali muhly
2. Muhlenbergia glomerata (Willd.) Trin. -- Bristly muhly
3. Muhlenbergia mexicana (L.) Trin. -- Wirestem muhly
4. Muhlenbergia racemosa (Trin.) Rydb. -- Marsh muhly, green muhly
5. Muhlenbergia richardsonis (Trin.) Rydb. -- Mat muhly


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/genmuhle.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:38:32 EST
Sioux Falls, SD [sdww54]