OregonFlora species comparison

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Erigeron poliospermus

Erigeron aureus

hairy-seeded daisy, purple-cushion fleabane

golden fleabane
Habit Plants perennial, 5–10 cm; fibrous-rooted, with short, usually unbranched caudices.
Stems

erect; hirsute to villous, minutely glandular.
Basal leaves

persistent, spatulate to oblanceolate, 10–50 × 5–10 mm;

margins entire;

surfaces moderately to densely strigose, eglandular to minutely glandular.
Cauline leaves

5–10 × 1–5 mm abruptly reduced, often a single linear bract.
Involucres

4–6 × 10–15 mm.
Ray florets

40–60, bright yellow;

rays 4–6 × 0.5–1.5 mm.
Disc florets

corollas 3–4 mm.
Phyllaries

in 2–3 series, often purplish colored;

surfaces moderately to densely woolly-villous, sparsely glandular.
Fruits

2–3 mm, moderately strigose;

inner pappi of numerous barbellate bristles.
Heads

1, radiate.
2n

=18.

Erigeron poliospermus

Erigeron aureus
Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Ridges, talus, rocky slopes. Flowering Jul–Aug. 1600–2600 m. BW. WA; north to British Columbia, northeast to Alberta. Native.

In Oregon, this native species is currently known only from a single collection in the Eagle Cap Wilderness, Wallowa Mountains.
Source Flora of Oregon, volume 2, page 252
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. oreganus, E. peregrinus, E. petrophilus, E. philadelphicus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
E. acris, E. aliceae, E. annuus, E. aphanactis, 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. 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. poliospermus var. poliospermus
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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