Annual Muhly - Muhlenbergia minutissima
Annual bunchgrass. Stems 5–39 cm. Leaves: blades 1–2 mm wide; ligule about 1 mm long. Inflorescence an open panicle 5–15 cm long. Spikelets 1–1.5 mm long. Lemmas unawned to awn-tipped, callus hairs few to absent (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Collected July and August.
This is our only annual Muhlenbergia with an open, spreading inflorescence. It could be confused with species of Panicum and Agrostis. A technical key and a hand lens or microscope are needed for positive determination.
Collected in Gallatin County; sporadic throughout western U.S. (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Moist soil along rivers and streams in the valleys.
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.