The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links
Erigeron oreganus

Gorge daisy, gorge fleabane, Oregon fleabane

Eaton's fleabane

Habit Plants perennial, 5–15 cm; taprooted, caudices unbranched. Plants perennial, 4–28 cm; taprooted, caudices branching or not.
Stems

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

erect to ascending or decumbent, usually strigose to occasionally villous, becoming woolly distally, sometimes minutely glandular.

Basal leaves

persistent, obovate, 15–90 × 5–20 mm;

margins coarsely serrate to shallowly lobulate;

surfaces sparsely to moderately hirsute to strigose.

persistent, linear to narrowly oblanceolate, 20–150 × 2–10 mm;

margins entire, usually with 3 distinct basal veins;

tips usually rounded to acute or acuminate;

surfaces strigose to hirsute, eglandular.

Cauline leaves

obovate to elliptic; little or not reduced distally;

surfaces sparsely to moderately hirsute.

gradually to abruptly reduced distally, sometimes becoming linear and bract-like.

Involucres

4–7 × 9–15 mm.

4–6 × 8–15 mm.

Ray florets

30–60, pink to purple;

rays 4–5 × 0.5–1 mm.

20–45, white to purple;

rays 3–8 × 0.8–2.5 mm.

Disc florets

corollas 3–5 mm.

corollas 3–4 mm.

Phyllaries

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

surfaces remotely hirsute, strongly stipitate-glandular.

in 2–3 series;

surfaces sparsely sericeous to densely villous, sometimes minutely glandular.

Fruits

2–3 mm, moderately strigose;

inner pappi of several unbarbed to weakly barbellate twisted bristles.

2–3 mm, glabrate to remotely strigose;

inner pappi of numerous barbellate bristles.

Heads

1–4, radiate.

1–3 in scape- or corymb-like arrays, radiate.

Erigeron oreganus

Erigeron eatonii

Distribution
[WildflowerSearch map]
[BONAP county map]
[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.

Western United States. 6 varieties; 3 varieties treated in Flora.

Source Flora of Oregon, volume 2, page 259
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 256
James Riser, Stephen Meyers
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. decumbens, E. disparipilus, E. divergens, E. eatonii, E. elegantulus, E. filifolius, E. foliosus, E. glacialis, E. glaucus, 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. tener, E. vagus
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. decumbens, E. disparipilus, E. divergens, E. elegantulus, E. filifolius, E. foliosus, E. glacialis, E. glaucus, E. howellii, E. inornatus, E. karvinskianus, E. klamathensis, E. latus, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. petrophilus, E. philadelphicus, E. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
Subordinate taxa
E. eatonii var. lavandulus, E. eatonii var. plantagineus, E. eatonii var. villosus
Web links