UW Burke Herbarium species comparison

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Erigeron chrysopsidis

Erigeron acris

dwarf yellow fleabane

bitter fleabane
Habit Biennial or perennial, 0.5-8 dm. tall, often covered with stiff, blunt hairs.
Leaves

Basal leaves oblanceolate or spatulate, the cauline ones ample to strongly reduced, lance-ovate to linear-oblong;
Flowers

Heads usually several on somewhat glandular, curved peduncles;

involucral bracts tapered and pointed;

rays pistillate, numerous, erect, inconspicuous, white, up to 4 mm. long and 0.4 mm. wide; inner pistillate flowers rayless;

pappus surpassing the disk flowers.

Erigeron chrysopsidis

Erigeron acris
Flowering time May-July June-September
Habitat Shrub-steppe to open slopes of forests at middle elevations. Meadows, forest openings, and open slopes from middle elevations to the subalpine.
Distribution
Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains, Great Lakes region, and northeastern North America; circumboreal.
[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. 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
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. poliospermus, E. pumilus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
Subordinate taxa
E. chrysopsidis var. chrysopsidis
E. acris var. kamtschaticus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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