Erigeron divergens |
Erigeron glaucus |
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diffuse daisy, spreading fleabane |
seaside daisy, seaside fleabane |
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Habit | Plants annual or short-lived perennial, 12–50+ cm; taprooted, with short, branching caudices. | Plants perennial, 3–30 cm; fibrous-rooted, rhizomatous, caudices usually simple, occasionally branching. |
Stems | erect, ascending to decumbent, densely pilose to sparsely hirsute, minutely glandular at least distally. |
decumbent, procumbent or ascending, sparsely to moderately hirsute, usually minutely glandular. |
Basal leaves | 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. |
persistent, obovate to broadly spatulate, 15–40 × 5–25 mm; margins entire; surfaces usually glabrous and eglandular. |
Cauline leaves | numerous and well developed, elliptic, obovate, or linear, 5–30 × 1–4 mm, usually slightly reduced distally; surfaces densely strigose to villous. |
similar to basal, 7–30 × 3–15 mm, gradually reduced distally. |
Involucres | 2–4 × 6–10 mm. |
5–10 × 10–21 mm. |
Ray florets | 75–150, light purple to lavender; rays 2–5 × 0.25–0.6 mm. |
70–100, lavender to purple; rays 6–9 × 1–2 mm. |
Disc florets | corollas 2–3 mm. |
corollas 4–6 mm. |
Phyllaries | 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. |
in 3–4 series; surfaces moderately to densely villous, sparsely to moderately glandular. |
Fruits | 0.75–1 mm, glabrous to very sparsely strigose; inner pappi of numerous barbellate bristles. |
2–3 mm, sparsely to moderately strigose; inner pappi of numerous barbellate bristles. |
Heads | 1–20+ in corymb-like arrays, radiate. |
1(3), radiate. |
2n | =18, 27, 36. |
=18. |
Erigeron divergens |
Erigeron glaucus |
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Distribution | ||
Discussion | 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. |
Coastal dunes, bluffs. Flowering May–Aug. 0–500 m. Est. CA. Native. |
Source | Flora of Oregon, volume 2, page 255 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 257 James Riser, Stephen Meyers |
Sibling taxa | ||
Synonyms | Erigeron divergens var. divergens | |
Web links |
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