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dwarf blue fleabane, volcanic fleabane

peregrine fleabane, subalpine fleabane

Habit Plants perennial, 4–10 cm; taprooted, with branching caudices. Plants perennial, 20–50 cm; fibrous-rooted, often rhizomatous, caudices usually simple.
Stems

erect to basally ascending, sparsely to moderately strigose, eglandular.

erect, nearly glabrous, or sparsely hirsute proximally to densely strigillose or pilose distally, eglandular.

Basal leaves

persistent, linear to filiform, 20–50 × 0.5–1 mm, white, bases sheathing;

margins entire;

tips round to acute or acuminate;

surfaces sparsely to moderately strigose.

persistent, linear-oblanceolate to broadly oblanceolate, 30–150 × 8–30 mm;

margins entire;

surfaces glabrous, eglandular.

Cauline leaves

abruptly reduced and usually restricted to basal ? of stem, bases sheathing.

lanceolate to oblanceolate, 10–80 × 3–30 cm, reduced distally, bases occasionally clasping;

surfaces glabrous.

Involucres

3–5 × 8–11 mm.

5–8 × 12–15 mm.

Ray florets

15–30, lavender to purple;

rays 3–8 × 0.7–1.3 mm.

30–60, lavender to purple;

rays 5–9 × 1.5–4 mm.

Disc florets

corollas 2.5–3.5 mm.

corollas 4–6 mm.

Phyllaries

in 3–4 unequal series;

surfaces sparsely strigose, eglandular.

in 2–3 series, with dark medial area, glabrous, densely glandular.

Fruits

1–2 mm, nearly glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

2–4 mm, sparsely to moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

1, radiate.

1(4), radiate.

2n

=27.

Erigeron elegantulus

Erigeron glacialis var. glacialis

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

Rocky areas, sagebrush, coniferous forests. Flowering Jun–Aug. 700–2500 m. BR, BW, Casc, Owy. CA. Native.

Meadows, streamsides, lakeshores, bogs. Flowering Jun–Sep. 800–3200 m. BR, BW, Casc, CR, ECas. CA, ID, NV, WA; north to AK, northeast to Alberta, east to WY, southeast to NM. Native.

Source Flora of Oregon, volume 2, page 256
James Riser, Stephen Meyers
Flora of Oregon, volume 2 draft
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. 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. glacialis var. glacialis
Synonyms Erigeron peregrinus ssp. callianthemus, Erigeron peregrinus var. angustifolius, Erigeron peregrinus var. callianthemus, Erigeron peregrinus var. eucallianthemus, Erigeron peregrinus var. scaposus, Erigeron ursinus
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