Symphyotrichum ciliolatum |
Symphyotrichum spathulatum |
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western mountain aster |
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Habit | Plants perennial, 2–8 dm; from elongate rhizomes. | |
Stems | ascending to erect, glabrous to sparsely pubescent. |
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Leaves | ? 7 × as long as wide; margins entire; tips acute; surfaces glabrous to sparsely puberulent; basal leaves present at flowering, narrowly elliptic to obovate, 5–15 cm, petiolate; cauline linear to narrowly elliptic, 3–6(12) cm, subpetiolate to sessile. |
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Inflorescences | open; panicle-like arrays, usually few-branched. |
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Involucres | 5–10 mm. |
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Ray florets | 15–40; rays 9–15 mm, violet. |
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Phyllaries | in 3–5 unequal series, linear to narrowly oblanceolate, bases scarious-margined; tips acute, sometimes ± obtuse, green; surfaces glabrous to sparsely puberulent. |
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Fruits | pubescent; pappus bristles 5–7 mm; whitish. |
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Heads | 3–50. |
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Symphyotrichum ciliolatum |
Symphyotrichum spathulatum |
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Distribution | ||
Discussion | 3 varieties. |
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Source | Flora of Oregon, volume 2, page 358 Geraldine Allen |
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Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Aster junciformis, Aster occidentalis, Aster spathulatus | |
Web links |
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