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Erigeron oreganus

Gorge fleabane, Oregon fleabane

shaggy fleabane

Habit Perennial from a stout, woody base and root, the lax stem 5-15 cm. long, covered with glands and loose, sticky hairs. Perennial from a woody base and taproot, the stem 5-50 cm. tall, the herbage copiously spreading-hairy.
Leaves

Basal leaves tufted, spatulate to obovate, coarsely toothed or incised, up to 9 cm. long and 2.5 cm. wide;

cauline leaves well developed, broadly lanceolate to ovate or elliptic, up to 4 cm. long and 1 cm. wide.

Leaves basal and cauline, oblanceolate to linear-oblanceolate, up to 8 cm. long and 8 mm. wide.

Flowers

Heads 1-several in a leafy inflorescence, the disk 9-13 mm. wide;

involucre 5-7 mm. high, the bracts loose, equal, thin and green;

rays 30-60, pink or white to bluish; disk corollas 3.4-4.7 mm. long, yellow;

pappus simple, of 15-20 bristles that are curled and twisted above.

Heads several, the disk 7-15 mm. wide;

involucre 4-7 mm. high, the bracts narrow, spreading-hairy;

rays 50-100, 0.7-1.5 mm. wide, usually white, occasionally pale blue or pink; disk corollas 3.5-5 mm. long, slender, yellow but paler below;

pappus of capillary bristles, with an outer row of shorter bristles.

Fruits

Achenes slightly hairy.

Erigeron oreganus

Erigeron pumilus

Flowering time May-September May-July
Habitat Moist shady cliffs and ledges. Open places in the foothills, valleys and plains, often among sagebrush.
Distribution
Occurring in the Columbia River Gorge in Washington; Columbia River Gorge in Washington to adjacent Gorge area in Oregon.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Great Plains.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Threatened 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. inornatus, E. karvinskianus, E. leibergii, E. linearis, E. lonchophyllus, E. nivalis, 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. inornatus, E. karvinskianus, E. leibergii, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. philadelphicus, E. piperianus, E. poliospermus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
Subordinate taxa
E. pumilus var. intermedius, E. pumilus var. pumilus
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