Plains Rough Fescue - Festuca hallii
Cespitose perennials, mostly 25-85 cm tall. Culms sometimes scabrous near top. Leaf sheaths closed for less a third of their length, collars glabrous; ligules 0.3-0.6 mm long; blades usually conduplicate, less than 1.2 mm in diameter, or more rarely flat and up to 2.5 mmwide, grayish-green, surfaces scabrous (or puberulent below). Inflorescences 6-16 cm long, more or less contracted; branches 1-2(3) per node, stiffly spreading (typically when flowering) to erect, spikelets borne towards tips. Spikelets 6.5-9.5 mm long; florets 2-3(4). Glumes about equal to or slightly exceeding upper florets. Lower glumes 5-8(-9.5) mm long; upper glumes 6.2-8.5(-9.5) mm long; lemmas 5.5-8(-9) mm long, awnless or with awns to 1.3 mm long; anthers 4-6 mm long; ovary apex sparsely pubescent (adapted from: Darbyshire & Pavlick, 2007, Flora of N. America, Vol. 24).
Lavin (2012) includes this species in synonymy of Festuca campestris.
BC east to SK, south to OR, northern ID and western half of MT; disjunct in a few counties in southern CO (Kartesz in prep. 2012).
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)
Grasslands of northern Great Plains, but alpine meadows in southern CO (Darbyshire & Pavlick, 2007, Flora of N. America, Vol. 24).
- 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.