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Erigeron oreganus

Gorge fleabane, Oregon fleabane

Erigeron flettii

Flett's fleabane, Olympic Mt. 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 stout, branched, woody base, 5-15 cm. high, the stem with sparse, spreading 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.

Leaves mostly basal, spatulate to oblanceolate, up to 5 cm. long and 12 mm. wide, mostly glabrous, with a few hairs on the leaf margins.

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 disk 10-15 mm. wide;

involucre 6-8 mm. high, with a few soft hairs, and sometimes sticky;

rays 25-50, white, 7-10 mm. long and 1.5-2.5 mm. wide; disk corollas yellow, 3.5-4.5 mm. long;

pappus of 15-20 capillary bristles and numerous short, outer bristles.

Fruits

Achene

Erigeron oreganus

Erigeron flettii

Flowering time May-September June-August
Habitat Moist shady cliffs and ledges. Cliffs and other rocky places in the subalpine and alpine.
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 in the Olympic Mountains in Washington, where endemic.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Threatened in Washington (WANHP) 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. 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. 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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