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showy daisy, showy fleabane

Siskiyou daisy, Siskiyou fleabane

Habit Plants perennial, 15–75 cm; rhizomatous, fibrous-rooted, caudices branching. Plants perennial, 10–45 cm; fibrous-rooted, rhizomatous, occasionally with branching caudices.
Stems

erect;

surfaces glabrous to rarely remotely hirsute, sometimes minutely glandular distally.

erect or ascending, glabrous and mostly eglandular.

Basal leaves

usually withering by flowering, oblanceolate to spatulate.

persistent, oblanceolate to obovate, 10–100 × 5–15 mm;

margins entire;

surfaces glabrous, eglandular.

Cauline leaves

lanceolate, 20–80 × 5–15 mm, gradually reduced distally, bases ± clasping;

margins entire, usually long-ciliate;

surfaces glabrous, rarely remotely strigose.

oblanceolate to elliptic, 10–50 × 2–10 mm, gradually reduced distally.

Involucres

3–7 × 11–16 mm.

4–6 × 10–13 mm.

Ray florets

40–115+, lavender to purple;

rays 7–11 × 0.7–1.5 mm.

20–40;

corollas white to purple;

rays 3–7 × 0.5–1.5 mm.

Disc florets

2–3 mm.

corollas 3–5 mm.

Phyllaries

in 2–3+ series, usually with orange stripe;

surfaces basally hirsute to villous, occasionally minutely glandular.

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

surfaces glabrous, densely glandular.

Fruits

2–3 mm, glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

1.5–2 mm, moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

1–5+ in corymb-like arrays, radiate.

1–4 in loose corymb-like arrays, radiate.

Erigeron speciosus

Erigeron cervinus

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

Conifer forests, moist slopes, riverbanks, wet meadows. Flowering Jun–Sep. 50–2500 m. BR, BW, CR, WV. ID, NV, WA; north to British Columbia, northeast to Alberta, east to NE, southeast to NM. Native.

Streamsides, river bars, wet rocky banks, moist seeps. Flowering May–Aug. 0–1700 m. Sisk. CA. Native.

Source Flora of Oregon, volume 2 draft
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 253
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. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, 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 speciosus var. macranthus, Erigeron speciosus var. speciosus, Erigeron subtrinervis Erigeron delicatus
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