UW Burke Herbarium species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Erigeron eatonii

Erigeron acris

Eaton's fleabane

bitter fleabane
Habit Perennial from a tap-root, 5-30 cm. tall, the stems decumbent and purplish at the base, with appressed hairs. Biennial or perennial, 0.5-8 dm. tall, often covered with stiff, blunt hairs.
Leaves

Basal leaves tufted, narrow, acute, gradually tapering to the petiole;

cauline leaves several, conspicuously reduced.

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

Heads solitary or up to 7 in an open inflorescence;

involucres 5-7 mm. high;

rays 20-50, pistillate, white, 5-10 mm. long and 1-3 mm. wide; disk corollas 3.5-5 mm. long, yellow;

inner pappus bristles 15-20, outer obscure.

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 eatonii

Erigeron acris
Flowering time May-July June-September
Habitat Grasslands, sagebrush, dry slopes, and forest openings at low to middle elevations. Meadows, forest openings, and open slopes from middle elevations to the subalpine.
Distribution
Occurring east of the Cascades crest in central and southeastern Washington; central Washington to California, east to the Rocky Mountains.
[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. chrysopsidis, E. compositus, E. corymbosus, E. davisii, E. disparipilus, E. divergens, 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. eatonii var. villosus
E. acris var. kamtschaticus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in UW Burke Herbarium yet, or it's listed under a synonym.)

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

The species comparison tool is brought to you by:
Northwest Wildflowers