Wirestem Muhly - Muhlenbergia mexicana
Perennials from long, scaly rhizomes. Stems 30-100 cm tall, ascending to erect, branching from middle and above. Leaf sheaths mostly glabrous; blades lax, flat, 4-15 cm long, 1.5-6 mm wide, scaberulous; ligules 0.4-1.5 mm long, truncate to acute. Panicles 3-21 cm long, 2-12 mm wide, terminal and axillary, narrow, often interrupted and partially included in uppermost sheath; branches mostly erect, spikelet-bearing thorughout. Callus hairs 0.2-1.5 mm long. Spikelets 2-4.4 mm long, one-flowered, pale green or purple-tinged. Glumes subequal, 2-4.4 mm long, 1-nerved, the midnerves extending into an awn 0.5-1.5 mm long; lemmas 2-3.8 mm long, 3-nerved, awned to about 6 mm long; paleas about length of lemma; anthers 0.3-0.5 mm long (adapted from: Welsh et al., 1993, A Utah Flora, 2nd ed.).
BC to NS, south to CA, TX, AR, and VA (Kartesz in prep. 2012). Collected in Carbon County, MT, in 2001 at Bighorn National Recreation Area by Bonnie Heidel (no. 2104) (Rocky Mountain Herbarium website, accessed 3 January 2013).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Wet areas, sometimes in woodlands, often in disturbed sites.
- 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.