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showy daisy, showy fleabane

annual fleabane, eastern daisy fleabane

Habit Plants perennial, 15–75 cm; rhizomatous, fibrous-rooted, caudices branching. Plants annual, 40–110 cm; fibrous-rooted or weakly taprooted.
Stems

erect;

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

erect, sparsely to moderately hirsute, usually becoming strigose distally, eglandular.

Basal leaves

usually withering by flowering, oblanceolate to spatulate.

usually withering by flowering, broadly lanceolate to oblanceolate, 50–120 × 5–25 mm;

margins coarsely serrate or nearly entire;

surfaces sparsely strigose.

Cauline leaves

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

margins entire, usually long-ciliate;

surfaces glabrous, rarely remotely strigose.

lanceolate, oblanceolate, or oblong, 15–80 × 2–15+ mm, often reduced distally;

margins entire to coarsely serrate;

surfaces sparsely strigose.

Involucres

3–7 × 11–16 mm.

3–5 × 5–13 mm.

Ray florets

40–115+, lavender to purple;

rays 7–11 × 0.7–1.5 mm.

60–110, white to pale lavender;

rays 2–8 × 0.5–1 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 medial area, with or without an orangish stripe;

surfaces glabrous to sparsely villous, often minutely glandular.

Fruits

2–3 mm, glabrous to sparsely strigose;

inner pappi of numerous barbellate bristles.

1–2 mm, sparsely strigose;

disc fruit pappi of numerous barbellate bristles; ray fruit pappi lacking.

Heads

1–5+ in corymb-like arrays, radiate.

5–many in corymb-like or panicle-like arrays, radiate.

2n

=27.

Erigeron speciosus

Erigeron annuus

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.

Roadsides, fields, disturbed areas. Flowering Jul–Sep. 0–1000 m. BW, Casc, CR, Est, Lava, WV. CA, ID, WA; scattered in western North America, throughout eastern and mid­western North America; Asia, Europe. Exotic.

Source Flora of Oregon, volume 2 draft
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 252
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. 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
Synonyms Erigeron speciosus var. macranthus, Erigeron speciosus var. speciosus, Erigeron subtrinervis
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