Symphyotrichum foliaceum |
Symphyotrichum foliaceum var. canbyi |
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alpine leafybract aster, Canby's leafybract aster, Cusick's American aster, Cusick's aster, Henderson's aster, Kootenai aster, leafy aster, leafy or leafy-bract or alpine leafybract aster, leafy-bract aster, Parry's aster |
Canby's aster |
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Habit | Perennials 10–60 cm, colonial; long-rhizomatous. | Plants 30–60 cm. | ||||||||||||
Stems | 1–5+, ascending to erect, glabrous or sparsely puberulent. |
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Leaves | thin, margins entire or sometimes serrate, apices acute to obtuse, faces usually glabrous, sometimes sparsely hairy; basal usually persistent, petiolate to subpetiolate, blades broadly elliptic to obovate, 30–200 × 8–25(–30) mm, bases attenuate, margins entire or sometimes serrate, apices acute to obtuse; proximal cauline sessile or subpetiolate, blades elliptic to obovate, 35–120 × 8–25 mm, bases attenuate or cuneate to rounded, sometimes ± clasping, apices acute; distal sessile, reduced distally, bases cuneate, apices acute. |
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Cauline leaf | bases often clasping. |
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Peduncles | sparsely hairy, bracts 0–3, lanceolate. |
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Involucres | campanulate, 6–16(–20) mm. |
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Ray florets | 15–60; corollas violet to purple, laminae 8–18(–20) × 1–2 mm. |
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Disc florets | 50–150; corollas yellow, 4–7 mm, lobes triangular, 0.4–1 mm. |
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Phyllaries | in 4–6 series, oblanceolate or oblong (outer) to lanceolate or linear (inner), subequal or unequal (outer exceeding inner), bases outer foliaceous, inner indurate, margins entire, green zones elliptic to lanceolate, apices acute to rounded, faces glabrous or puberulent. |
green, broadly oblanceolate (outer) to lanceolate or linear (inner), unequal, outer exceeding inner and wider, often foliaceous, apices obtuse to rounded, inner narrowly ovate, apices acute to obtuse. |
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Heads | borne singly or in paniculiform arrays, branches ascending, up to 25 cm. |
usually 5–15. |
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Cypselae | brown, cylindric to obovoid, not compressed, 2.5–4 mm, 3–4-nerved, faces hairy; pappi white to tawny, 5–8 mm. |
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2n | = 16. |
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Symphyotrichum foliaceum |
Symphyotrichum foliaceum var. canbyi |
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Phenology | Flowering Jun–Aug. | |||||||||||||
Habitat | Montane meadows, open slopes and woods | |||||||||||||
Elevation | 1400–3000 m (4600–9800 ft) | |||||||||||||
Distribution |
AK; AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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AZ; ID; MT; NM; NV; WA; WY |
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Discussion | Varieties 4 (4 in the flora). Symphyotrichum foliaceum is extremely variable and is widespread in western montane coniferous forests and subalpine meadows. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 532. | FNA vol. 20, p. 533. | ||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales | Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales > Symphyotrichum foliaceum | ||||||||||||
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Synonyms | Aster foliaceus | Aster foliaceus var. canbyi, Aster foliaceus var. burkei | ||||||||||||
Name authority | (Lindley ex de Candolle) G. L. Nesom: Phytologia 77: 282. (1995) | (A. Gray) G. L. Nesom: Phytologia 77: 282. (1995) | ||||||||||||
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