Erigeron robustior |
Erigeron linearis |
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desert yellow fleabane, lineleaf fleabane |
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Habit | Plants perennial, 7–20 cm; taprooted, caudices branching. | |
Stems | erect or basally ascending, moderately to densely strigose, eglandular. |
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Basal leaves | persistent, linear to very narrowly oblanceolate, 15–80 × 0.5–2 mm, bases sheathing and light- or white-colored; margins entire; surfaces moderately to densely strigose, eglandular. |
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Cauline leaves | linear, 5–20 × 0.5–1 mm, usually reduced distally, bases sheathing. |
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Involucres | 5–8 × 9–13 mm. |
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Ray florets | 20–40, bright yellow; rays 5–7 × 1–2 mm. |
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Disc florets | corollas 3–5 mm. |
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Phyllaries | in 2–3 series; surfaces moderately to densely strigose; hirsute, or manicate, minutely glandular. |
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Fruits | 2–3 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
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Heads | 1(2), radiate. |
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2n | =18, 27, 36, 45. |
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Erigeron robustior |
Erigeron linearis |
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Distribution | ||
Discussion | Rocky areas, sagebrush, juniper forests. Flowering May–Jul. 200–2500 m. BR, BW, Col, ECas, Lava, Owy. CA, ID, NV, WA; north to British Columbia, northeast to MT, east to WY, southeast to UT. 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 |
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