UW Burke Herbarium species comparison

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Erigeron poliospermus

Erigeron chrysopsidis

hairy-seeded daisy, cushion fleabane

dwarf yellow fleabane
Habit Taprooted perennial with short-branched, woody base; stems to 15 cm. high; plants more or less spreading-hairy and glandular throughout.
Leaves

Basal leaves linear-oblanceolate to spatulate, up to 8 cm. long and 12 mm. wide, the cauline leaves reduced.

Flowers

Heads solitary, hemispheric, the disk 9-20 mm. wide;

involucre 5-9 mm. high;

rays 15-45, pale pink or purple to deep violet, 4-15 mm. long and 1.3-3.6 mm. wide;

pappus of 20-30 capillary bristles.

Fruits

Achenes densely covered with long, silky hairs.

Erigeron poliospermus

Erigeron chrysopsidis
Flowering time April-June May-July
Habitat Dry, open, typically rocky areas, often with sagebrush. Shrub-steppe to open slopes of forests at middle elevations.
Distribution
Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to western Idaho.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Not of concern
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aureus, E. basalticus, E. bloomeri, E. caespitosus, E. chrysopsidis, E. compositus, E. corymbosus, E. davisii, E. disparipilus, E. divergens, E. eatonii, E. elatus, E. filifolius, E. flettii, E. glacialis, E. howellii, E. inornatus, E. karvinskianus, E. leibergii, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. philadelphicus, E. piperianus, E. pumilus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
E. acris, E. aliceae, E. annuus, E. aureus, E. basalticus, E. bloomeri, E. caespitosus, E. compositus, E. corymbosus, E. davisii, E. disparipilus, E. divergens, E. eatonii, E. elatus, E. filifolius, E. flettii, E. glacialis, E. howellii, E. inornatus, E. karvinskianus, E. leibergii, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. philadelphicus, E. piperianus, E. poliospermus, E. pumilus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
Subordinate taxa
E. poliospermus var. cereus, E. poliospermus var. poliospermus
E. chrysopsidis var. chrysopsidis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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