Erigeron rydbergii |
Erigeron howellii |
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Howell's fleabane |
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Habit | Plants perennial, 20–45 cm; fibrous-rooted, rhizomatous, caudices branching or not. | |
Stems | erect, glabrous to sparsely and minutely strigillose, eglandular. |
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Basal leaves | persistent, broadly spatulate, 40–150 × 10–35 mm; margins entire or with few large teeth; surfaces glabrous, eglandular. |
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Cauline leaves | lanceolate to elliptic, 15–80 × 10–35 mm, gradually reduced distally; margins entire or with few coarse teeth; surfaces often ciliate or glandular. |
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Involucres | 5–9 × 15–23 mm. |
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Ray florets | 25–50, white; rays 8–20 × 2.5–4 mm. |
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Disc florets | corollas 4–5 mm. |
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Phyllaries | in 2–3 series, with prominent central veins; surfaces glabrous, densely glandular. |
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Fruits | 2.5–3 mm, sparsely to moderately strigose; inner pappi of numerous barbellate bristles. |
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Heads | 1, radiate. |
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Erigeron rydbergii |
Erigeron howellii |
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Distribution | ||
Discussion | Rocky slopes, open woods. Flowering May–Jul. 100–1500 m. Casc. WA. Native. |
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Source | Flora of Oregon, volume 2, page 258 James Riser, Stephen Meyers |
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Sibling taxa | ||
Web links |