UW Burke Herbarium species comparison

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Festuca idahoensis

bluebunch fescue, Idaho fescue
Habit Strongly tufted perennial, usually glabrous, the hollow culms 4-10 dm. tall.
Leaves

Sheaths open, usually glabrous;

ligules 0.3-0.6 mm. long, highest on the sides;

blades mostly basal, filiform, folded-involute, up to 10 cm. long.
Flowers

Inflorescence a narrow panicle 7-15 cm. long, the branches erect to ascending;

spikelets 5- to 7-flowered; first glume narrowly lanceolate, about 3.5 mm. long, 1-nerved; second glume oblong-lanceolate, about 5 mm. long, 3-nerved;

lemmas rounded, about 6.5 mm. long, with a stout awn 2-5 mm. long;

palea equal to the lemma.

Festuca idahoensis
Flowering time May-July
Habitat Grasslands and sagebrush desert to dry mountain slopes, occasionally to the subalpine.
Distribution
Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
F. brachyphylla, F. campestris, F. filiformis, F. occidentalis, F. ovina, F. roemeri, F. rubra, F. saximontana, F. subulata, F. subuliflora, F. trachyphylla, F. valesiaca, F. viridula, F. washingtonica
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Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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