Poa douglasii |
Poa reflexa |
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nodding bluegrass |
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Habit | Plants perennial, short-lived, 10–60 cm tall; densely cespitose. | |
Basal branching | intraand extravaginal. |
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Leaves | sheaths closed 33–50% of their length; smooth; ligules 1.5–3.5 mm; blades flat, 1.5–4 mm wide. |
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Inflorescences | nodding; open, 4–15 cm; branches spreading to reflexed, flexuous; (2)3–7 cm, 1–2 per node; smooth to sparsely scabrous, with (3)6–18 spikelets. |
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Spikelets | lanceolate to broadly lanceolate, 4–6 mm, usually partly to wholly purplish; florets 3–5. |
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Glumes | narrowly to broadly lanceolate; keels smooth or nearly so; lower glumes 1-veined; upper glumes shorter than or subequal to lowest lemma. |
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Calluses | with cobwebby hairs. |
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Lemmas | lanceolate, 2–3.5 mm, partly to mostly purple colored, distinctly keeled; keels short- to long-villous for over 67% of their length; marginal veins short- to long-villous; lateral veins usually sparsely softly puberulent at least on one side; area between veins smooth; tips acute, slightly bronze colored or not. |
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Anthers | 0.6–1 mm. |
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Poa douglasii |
Poa reflexa |
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Distribution | ||
Discussion | Subalpine and alpine meadows, streamsides, talus slopes. 1000–2600 m. BW. ID, NV; northeast to MT, southeast to NM. Native. Poa reflexa is a rare subalpine bluegrass similar to P. leptocoma. Poa leptocoma grows in wetter habitats and has glabrous lateral lemma veins and scabrous panicle branches. |
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Source | Flora of Oregon, volume 1, page 464 Rob Soreng, Barbara Wilson, Richard Brainerd, Nick Otting |
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Sibling taxa | ||
Web links |