Erigeron speciosus(synonym of Erigeron subtrinervis) |
Erigeron philadelphicus |
|
---|---|---|
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 | ||
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 | ||
Synonyms | Erigeron speciosus var. macranthus, Erigeron speciosus var. speciosus, Erigeron subtrinervis | Erigeron philadelphicus var. philadelphicus |
Web links |