UW Burke Herbarium species comparison

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Aristida adscensionis

Aristida purpurea

Habit Strongly tufted perennial, the stems 2-4 dm. tall.
Leaves

Leaf blades involute, 1-2 mm. broad, 7-25 cm. long;

ligules 0.5 mm long, the frontal margin with hairs 2-3 mm. long.
Flowers

Inflorescence a narrow panicle 5-10 cm. long, the branches loosely ascending;

glumes awn-tipped, the first 7-13 mm. long, the second nearly twice as long;

floret 10-15 mm. long, the callus flattened, 1 mm. long;

lemma convolute, with a trifid, terminal awn 5-8 cm. long, the lateral branches divergent;

palea 2-2.5 mm. long, mush shorter than the lemma.
Fruits

Utricle

Aristida adscensionis

Aristida purpurea
Flowering time June-July
Habitat Desert plains, grasslands, and pondersoa pine forests.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; British Columbia to California, east to central Canada and the central U.S.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
A. purpurea
Subordinate taxa
A. purpurea var. longiseta
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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