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Erigeron oreganus

Gorge fleabane, Oregon fleabane

golden 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 short, branched woody base, 2-15 cm. tall, covered with fine, short hairs.
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.

Basal leaves petiolate, with elliptical to obovate, broadly rounded blade up to 13 mm. wide;

cauline leaves few and reduced.

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 solitary, the disks 7-16 mm. wide;

involucre 5-8 mm. high, its bracts loose, equal, herbaceous, often purplish, white-woolly;

rays 25-70, yellow, 6-9 mm. long and 1.4-2.5 mm. wide; disk corollas 3.6-4.9 mm. long, yellow;

pappus of 10-20 capillary bristles.

Fruits

Achene

Erigeron oreganus

Erigeron aureus

Flowering time May-September June-August.
Habitat Moist shady cliffs and ledges. Exposed rocky areas, cliffs, and ridges in subalpine to alpine areas.
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 on both sides of the Cascades crest in Washington; British Columbia to Washington, east to Alberta.
[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. 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
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