UW Burke Herbarium species comparison

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Erigeron inornatus

Erigeron annuus

California rayless fleabane

annual fleabane, eastern daisy fleabane, sweet scabrous fleabane
Habit Annual, 6-15 dm. tall, the stem with long, spreading hairs below the inflorescence.
Leaves

Leaves ample, generally toothed, the cauline leaves broadly lanceolate to ovate.
Flowers

Inflorescence large and usually leafy;

involucre 3-5 mm. high, finely glandular and sparsely long-hairy;

rays 80-125, white to lavender, 0.5-1 mm. wide and up to 10 mm. long; disk corollas 2-2.8 mm. long;

pappus of 10-15 very fragile bristles and some short, bristly scales, the bristles wanting in the ray flowers.

Erigeron inornatus

Erigeron annuus
Flowering time July-August June-September
Habitat Dry slopes and forest openings, often where sandy or rocky. Moist, disturbed areas from the lowlands to middle elevations.
Distribution
Occurring east of the Cascades crest in Washington; Washington to California, east to Nevada.
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho and Utah, not recorded for Montana, also from Great Plains east to the Atlantic.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native? Introduced in OR, status as a native in BC uncertain
Conservation status Review Group 1 in Washington (WANHP) 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. 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. 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. inornatus var. inornatus
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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