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dwarf blue fleabane, volcanic fleabane

foothill daisy, longleaf fleabane

Habit Plants perennial, 4–10 cm; taprooted, with branching caudices. Plants perennial, 15–40 cm; taprooted, often with slender, branching caudices.
Stems

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

erect or ascending, moderately hirsute to villous, 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.

usually persistent, linear to narrowly oblanceolate, 50–200 × 2–10 mm;

margins entire, 1–3 prominent veins;

tips usually acute;

surfaces moderately to densely strigose, eglandular.

Cauline leaves

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

linear, 15–60 × 1–5 mm, gradually reduced distally.

Involucres

3–5 × 8–11 mm.

4–7 × 8–14 mm.

Ray florets

15–30, lavender to purple;

rays 3–8 × 0.7–1.3 mm.

30–60, white to purple;

rays 2.5–14 × 1–1.5 mm.

Disc florets

corollas 2.5–3.5 mm.

corollas 4–5 mm.

Phyllaries

in 3–4 unequal series;

surfaces sparsely strigose, eglandular.

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

surfaces moderately to densely hirsute to villous, occasionally glandular.

Fruits

1–2 mm, nearly glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

2–3 mm, sparsely strigose;

inner pappi of numerous barbellate bristles.

Heads

1, radiate.

1–5(10) in corymb-like arrays, radiate.

2n

=27.

=18.

Erigeron elegantulus

Erigeron corymbosus

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.

Dry open hillsides, sagebrush, pine forests. Flowering Jun–Aug. 200–2500 m. BR, BW, Casc, ECas, Lava, Owy. ID, WA; north to British Columbia, northeast to MT, east to WY, southeast to UT. Native.

Source Flora of Oregon, volume 2, page 256
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 255
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. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, 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
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