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one-stem fleabane

Erigeron aliceae

Alice Eastwood's fleabane

Habit Plants perennial, 3–15 cm; fibrous-rooted, rhizomatous, caudices branched or not. Plants perennial, 30–70 cm; fibrous-rooted, rhizomatous, caudices sometimes branching.
Stems

erect, sparsely to moderately villous, eglandular.

erect, nearly glabrous or sparsely strigose often becoming more so distally, eglandular.

Basal leaves

persistent, oblanceolate to spatulate, 50–350 × 30–90 mm;

margins entire, sometimes moderately ciliate;

surfaces glabrous to glabrate.

usually persistent, lanceolate to oblanceolate, 50–120 × 10–30 mm;

margins entire, sometimes coarsely toothed with 1–5 pairs of teeth;

midveins prominent, rarely with 2 prominent veins;

surfaces remotely to moderately strigose.

Cauline leaves

obovate to linear, abruptly reduced distally;

surfaces usually hirsute.

well developed, lanceolate to narrowly elliptic, 10–80 × 3–14 mm, distally reduced, bases clasping.

Involucres

3–7 × 8–16 mm.

5–7 × 13–17 mm.

Ray florets

30–50+, lavender to purple;

rays 5–10 × 0.6–2.2 mm.

30–80, white to lavender to purple;

rays 4–12 × 1–1.5 mm.

Disc florets

2–3 mm.

corollas 2–4 mm.

Phyllaries

in 2 series;

margins usually ragged;

surfaces moderately to densely villous.

in 2–3 series, with dark green medial area;

surfaces white woolly-villous, glandular.

Fruits

1–2 mm, sparsely strigose;

inner pappi of numerous barbellate bristles.

2–3 mm, moderately to densely strigose;

inner pappi of numerous barbellate bristles.

Heads

1, radiate.

1–few, radiate.

Erigeron simplex

Erigeron aliceae

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

Rocky areas, meadows. Flowering Jul–Aug. 2400–3000 m. BW. ID, NV; northeast to MT, east to WY, southeast to CO, NM. Native.

Meadows, ridges, prairies. Flowering Jun–Sep. 400–2200 m. Casc, CR, ECas, Sisk. CA, WA. Native.

This is a variable species that can be confused with Erigeron glacialis. The woolly-villous phyllaries best distinguish E. aliceae from E. glacialis.

Source Flora of Oregon, volume 2, page 261
James Riser, Stephen Meyers
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. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
E. acris, 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. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
Synonyms Erigeron grandiflorus
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