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showy daisy, showy fleabane

diffuse daisy, spreading fleabane

Habit Plants perennial, 15–75 cm; rhizomatous, fibrous-rooted, caudices branching. Plants annual or short-lived perennial, 12–50+ cm; taprooted, with short, branching caudices.
Stems

erect;

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

erect, ascending to decumbent, densely pilose to sparsely hirsute, minutely glandular at least distally.

Basal leaves

usually withering by flowering, oblanceolate to spatulate.

persistent or withering by flowering, spatulate, 20–80 × 5–10 mm;

margins entire or with 1–2 coarse teeth;

surfaces moderately to densely strigose, usually eglandular.

Cauline leaves

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

margins entire, usually long-ciliate;

surfaces glabrous, rarely remotely strigose.

numerous and well developed, elliptic, obovate, or linear, 5–30 × 1–4 mm, usually slightly reduced distally;

surfaces densely strigose to villous.

Involucres

3–7 × 11–16 mm.

2–4 × 6–10 mm.

Ray florets

40–115+, lavender to purple;

rays 7–11 × 0.7–1.5 mm.

75–150, light purple to lavender;

rays 2–5 × 0.25–0.6 mm.

Disc florets

2–3 mm.

corollas 2–3 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 green or brown medial area and lighter colored stripe;

surfaces moderately to densely hirsute or strigose, moderately to densely glandular.

Fruits

2–3 mm, glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

0.75–1 mm, glabrous to very sparsely strigose;

inner pappi of numerous barbellate bristles.

Heads

1–5+ in corymb-like arrays, radiate.

1–20+ in corymb-like arrays, radiate.

2n

=18, 27, 36.

Erigeron speciosus

Erigeron divergens

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.

Dry open areas, roadsides, streambanks. Flowering May–Sep. 50–2200 m. BR, BW, Casc, Col, ECas, Est, Lava. CA, ID, WA; north to British Columbia, northeast to Alberta, east to SD, southeast to TX, south to Mexico. Native.

Source Flora of Oregon, volume 2 draft
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. 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. 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. corymbosus, E. coulteri, E. decumbens, E. disparipilus, 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 divergens var. divergens
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