Letterman's Bluegrass - Poa lettermanii
State Rank Reason (see State Rank above)
Collections at MONTU from DeerLodge, Ravalli, Silver Bow counties in the Anaconda-Pintler, Butte Highlands and Beartooth Mts. Many collections recent. >10 collections. Probably undercollected due to minute stature and because it grows at high alpine, inaccessible sites. Probably secure, but its abundance is uncertain.
Perennial bunchgrass. Stems 2–10 cm. Leaves: blades 0.5–2 mm wide; ligules 1–3 mm long. Inflorescence a contracted panicle 1–3 cm long. Spikelets 3–4 mm long. Lemmas hairless, keeled (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX
Distinguished from other alpine species of Poa in MT by its glabrous to scabrous lemmas, very broad florets and the glume length, which equals at least the first lemma.
Throughout western North America (Lesica et al. 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)
Grows mostly in high alpine tundra.
- Literature Cited AboveLegend: View Online Publication
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Additional ReferencesLegend: View Online Publication
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- Williams, K.L. 2012. Classification of the grasslands, shrublands, woodlands, forests and alpine vegetation associations of the Custer National Forest portion of the Beartooth Mountains in southcentral Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 376 p.