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Gorge daisy, gorge fleabane, Oregon fleabane

Habit Plants perennial, 5–15 cm; taprooted, caudices unbranched.
Stems

decumbent to erect; hirsute with unequal hairs, sparsely glandular.

Basal leaves

persistent, obovate, 15–90 × 5–20 mm;

margins coarsely serrate to shallowly lobulate;

surfaces sparsely to moderately hirsute to strigose.

Cauline leaves

obovate to elliptic; little or not reduced distally;

surfaces sparsely to moderately hirsute.

Heads

1–4, radiate.

Involucres

4–7 × 9–15 mm.

Ray florets

30–60, pink to purple;

rays 4–5 × 0.5–1 mm.

Disc florets

corollas 3–5 mm.

Phyllaries

in 2–3 series, pale green with dark green medial stripe;

surfaces remotely hirsute, strongly stipitate-glandular.

Fruits

2–3 mm, moderately strigose;

inner pappi of several unbarbed to weakly barbellate twisted bristles.

Erigeron oreganus

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Shady cliffs, rocky slopes, crevices. Flowering May–Aug. 100–400 m. Casc. WA. Native.

This uncommon species is found only in the Columbia River Gorge.

Source Flora of Oregon, volume 2, page 259
James Riser, Stephen Meyers
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. austiniae, E. bloomeri, E. breweri, E. canadensis, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. davisii, E. decumbens, E. delicatus, E. disparipilus, E. divergens, E. eatonii, E. elegantulus, E. engelmannii, E. filifolius, E. foliosus, E. glacialis, E. glaucus, E. grandiflorus, E. howellii, E. inornatus, E. karvinskianus, E. klamathensis, E. latus, E. linearis, E. lonchophyllus, E. nivalis, E. peregrinus, E. petrophilus, E. philadelphicus, E. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. subtrinervis, E. tener, E. ursinus, E. vagus
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