UW Burke Herbarium species comparison

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Erigeron filifolius

Erigeron inornatus

Peck's threadleaf fleabane

California rayless fleabane
Habit Perennial from a taproot and branched, short woody base, 1-5 dm. tall, the stem densely covered with fine, appressed hairs aligned in one direction.
Leaves

Leaves both basal and cauline, linear or linear-filiform, 1-8 cm. long and 0.3-3 mm. wide, of uniform width.

Flowers

Heads solitary or several;

involucre 4-6 mm. high, with fine, soft hairs or small glands or both;

rays 15-125, blue, pink or white, 3-13 mm. long and 1-2 mm. wide;

pappus of 20-30 simple hairs.

Erigeron filifolius

Erigeron inornatus
Flowering time May-July July-August
Habitat Sagebrush plains, dry slopes, and grasslands. Dry slopes and forest openings, often where sandy or rocky.
Distribution
Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to Montana, Idaho, and Utah.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; Washington to California, east to Nevada.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Review Group 1 in Washington (WANHP)
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. 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. 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. 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. inornatus var. inornatus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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