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foothill daisy, longleaf fleabane

dwarf yellow fleabane

Habit Plants perennial, 15–40 cm; taprooted, often with slender, branching caudices. Plants perennial, 3–20 cm; taprooted, usually with many woody, branching caudices.
Stems

erect or ascending, moderately hirsute to villous, eglandular.

erect; hirsute, eglandular to minutely glandular.

Basal leaves

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.

persistent in dense clusters, linear to narrowly oblanceolate, 10–80 × 1–3 mm;

margins entire with hispid hairs;

surfaces hirsute to hispid, sometimes nearing strigose.

Cauline leaves

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

abruptly reduced to (0)1–3 linear bracts.

Involucres

4–7 × 8–14 mm.

4–7 × 10–16 mm.

Ray florets

30–60, white to purple;

rays 2.5–14 × 1–1.5 mm.

20–60;

corollas with well-developed yellow rays, 4–8 × 0.5–2 mm, or tubular and short, or rays lacking.

Disc florets

corollas 4–5 mm.

corollas 4–5 mm.

Phyllaries

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

surfaces moderately to densely hirsute to villous, occasionally glandular.

in 2–3 series, sparsely to moderately hispid-villous, often minutely glandular.

Fruits

2–3 mm, sparsely strigose;

inner pappi of numerous barbellate bristles.

2–3 mm, moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

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

1, radiate or disciform.

2n

=18.

Erigeron corymbosus

Erigeron chrysopsidis

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

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.

Western United States. 3 varieties.

Source Flora of Oregon, volume 2, page 255
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 254
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. 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. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, 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. chrysopsidis var. austiniae, E. chrysopsidis var. brevifolius, E. chrysopsidis var. chrysopsidis
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