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showy daisy, showy fleabane

Philadelphia fleabane

Habit Plants perennial, 15–75 cm; rhizomatous, fibrous-rooted, caudices branching. Plants annual, biennial, or short-lived perennial, 10–80 cm; roots fibrous, caudices usually simple.
Stems

erect;

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

erect, sparsely to moderately hirsute to lanate, minutely glandular.

Basal leaves

usually withering by flowering, oblanceolate to spatulate.

withering by flowering, oblanceolate to nearly spatulate, 20–170 × 5–35 mm;

margins nearly entire, coarsely serrate, lobulate, or shallowly dentate;

surfaces slightly to moderately strigose or hirsute, 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 lanceolate to elliptic or oblong, 5–130 × 3–25 mm, distally reduced, bases clasping;

surfaces eglandular.

Involucres

3–7 × 11–16 mm.

3–6 × 6–15 mm.

Ray florets

40–115+, lavender to purple;

rays 7–11 × 0.7–1.5 mm.

150–250, white to pink;

rays 2–7 × 0.2–0.5 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;

surfaces sparsely to moderately hirsute, minutely glandular.

Fruits

2–3 mm, glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

1–1.5 mm, sparsely to moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

1–5+ in corymb-like arrays, radiate.

(1)3–many in corymb-like arrays, radiate.

2n

=18.

Erigeron speciosus

Erigeron philadelphicus

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.

Disturbed areas, streambanks, fields, meadows, forest openings. Flowering Apr–Sep. 0–1900 m. All ecoregions. CA, ID, NV, WA; nearly worldwide. Native.

Source Flora of Oregon, volume 2 draft
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 260
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. 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. 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 philadelphicus var. philadelphicus
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