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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

manyray aster

Habit Perennials 10–60 cm, colonial; long-rhizomatous. Perennials, 20–100(–120) cm, cespitose; usually with short, stout, branched caudices, woody with age, sometimes long-rhizomatous.
Stems

1–5+, ascending to erect, glabrous or sparsely puberulent.

1–5+, erect or ascending (straight, often stout), proximally usually ± densely hirtellous, sometimes glabrescent, distally hirsute.

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.

thick, firm, margins (slightly undulate) scabrous, adaxial faces glabrous or strigose, scabrous, adaxial ± sparsely hirsute to scabro-hirtellous, sometimes ± scabrous (cauline sometimes with tufts of smaller leaves in axils);

basal withering by flowering, petiolate (petioles sometimes narrowly winged), blades oblong-ovate to lanceolate, 10–40 × 10–20 mm, bases deeply cordate, margins sparsely serrate to serrulate, apices usually acute, sometimes obtuse to rounded;

proximal cauline usually withering by flowering, petiolate (petioles slender to ± winged), blades ovate to broadly lanceolate, 40–90 × (15–) 25–50 mm, bases shallowly cordate or rounded to attenuate, rarely truncate, margins subentire or entire (rarely serrulate), apices acute or acuminate, with short callus point;

distal subpetiolate or sessile, blades ovate to lanceolate or linear-lanceolate, 10–70 × 1–10 mm, gradually or abruptly reduced distally, bases attenuate to cuneate, margins entire, apices acute to acuminate.

Peduncles

sparsely hairy, bracts 0–3, lanceolate.

densely bracteate, 0.3–5(–10) cm (rarely subsesssile), bracts numerous, linear, 2–6 mm, mucronulate, grading into phyllaries.

Involucres

campanulate, 6–16(–20) mm.

campanulate, 5–10 mm.

Ray florets

15–60;

corollas violet to purple, laminae 8–18(–20) × 1–2 mm.

18–45;

corollas usually bright lavender-blue to purple, seldom white, laminae 9–15(–18) × 1–3.2 mm.

Disc florets

50–150;

corollas yellow, 4–7 mm, lobes triangular, 0.4–1 mm.

33–40+;

corollas cream or light yellow turning pinkish purple, (4–)4.5–5.5 mm, tubes shorter than funnelform throats, lobes sometimes ± spreading, triangular to lanceolate, 0.5–0.8 mm.

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.

in 4–6 series, oblong-lanceolate (outer) to oblanceolate-linear (innermost), unequal, bases indurate (appressed), margins ciliate to scabro-ciliate, green zones diamond-shaped to lanceolate, ± foliaceous distally, apices reflexed to squarrose, long-acuminate, apiculate, often purple, faces strigoso-hirtellous.

Heads

borne singly or in paniculiform arrays, branches ascending, up to 25 cm.

in open, diffuse, paniculiform arrays, branches divaricate, stout, long, densely bracteate.

Cypselae

brown, cylindric to obovoid, not compressed, 2.5–4 mm, 3–4-nerved, faces hairy;

pappi white to tawny, 5–8 mm.

deep purple to purplish brown or brown with purple speckles (nerves stramineous), oblong-obovoid, compressed, (1–)2.5–3.5(–3.8) mm, 5–6-nerved, faces glabrous;

pappi tawny or rose-tinged, 3.7–5.2 mm.

2n

= 16.

Symphyotrichum foliaceum

Symphyotrichum anomalum

Phenology Flowering late Aug–Oct.
Habitat Dry, sandy, loamy, or clayey soils over limestone, or acid soils over chert, sandstone, or granite, rocky, open deciduous woods, thickets, dry ridges, cliffs, bluffs, occasional along streams
Elevation 50–500 m (200–1600 ft)
Distribution
from FNA
AK; AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
AR; IL; KS; MO; OK
[WildflowerSearch map]
[BONAP county map]
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.)

A. G. Jones (1989, 1992) reported that Symphyotrichum anomalum may hybridize with S. drummondii, S. oolentangiense, and S. shortii.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Plants 5–30 cm; heads 1–12; phyllaries subequal, narrowly lanceolate
→ 2
1. Plants usually 20–60 cm; heads usually 5–20; outer phyllaries exceeding inner, wider, often foliaceous
→ 3
2. Plants 5–20 cm; heads usually borne singly; phyllaries often purple-tinged; alpine or sub- alpine habitats
var. apricum
2. Plants 10–30 cm; heads usually 1–12; phyllaries green; montane to subalpine habitats.
var. parryi
3. Phyllaries obtuse to rounded; cauline leaves often clasping at base
var. canbyi
3. Phyllaries acute; cauline leaves sometimes rounded at base, not clasping
var. foliaceum
Source FNA vol. 20, p. 532. FNA vol. 20, p. 504.
Parent taxa Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Symphyotrichum
Sibling taxa
S. adnatum, S. anomalum, S. anticostense, S. ascendens, S. boreale, S. bracteolatum, S. campestre, S. chapmanii, S. chilense, S. ciliatum, S. ciliolatum, S. concolor, S. cordifolium, S. cusickii, S. defoliatum, S. depauperatum, S. drummondii, S. dumosum, S. elliottii, S. ericoides, S. eulae, S. falcatum, S. fendleri, S. firmum, S. fontinale, S. frondosum, S. georgianum, S. grandiflorum, S. greatae, S. hallii, S. hendersonii, S. jessicae, S. laeve, S. lanceolatum, S. lateriflorum, S. laurentianum, S. lentum, S. molle, S. nahanniense, S. novae-angliae, S. novi-belgii, S. oblongifolium, S. ontarionis, S. oolentangiense, S. parviceps, S. patens, S. phlogifolium, S. pilosum, S. plumosum, S. porteri, S. potosinum, S. praealtum, S. pratense, S. prenanthoides, S. priceae, S. puniceum, S. pygmaeum, S. racemosum, S. retroflexum, S. rhiannon, S. robynsianum, S. sericeum, S. shortii, S. simmondsii, S. spathulatum, S. subspicatum, S. subulatum, S. tenuifolium, S. tradescantii, S. turbinellum, S. undulatum, S. urophyllum, S. walteri, S. welshii, S. yukonense, S. ×amethystinum
S. adnatum, S. anticostense, S. ascendens, S. boreale, S. bracteolatum, S. campestre, S. chapmanii, S. chilense, S. ciliatum, S. ciliolatum, S. concolor, S. cordifolium, S. cusickii, S. defoliatum, S. depauperatum, S. drummondii, S. dumosum, S. elliottii, S. ericoides, S. eulae, S. falcatum, S. fendleri, S. firmum, S. foliaceum, S. fontinale, S. frondosum, S. georgianum, S. grandiflorum, S. greatae, S. hallii, S. hendersonii, S. jessicae, S. laeve, S. lanceolatum, S. lateriflorum, S. laurentianum, S. lentum, S. molle, S. nahanniense, S. novae-angliae, S. novi-belgii, S. oblongifolium, S. ontarionis, S. oolentangiense, S. parviceps, S. patens, S. phlogifolium, S. pilosum, S. plumosum, S. porteri, S. potosinum, S. praealtum, S. pratense, S. prenanthoides, S. priceae, S. puniceum, S. pygmaeum, S. racemosum, S. retroflexum, S. rhiannon, S. robynsianum, S. sericeum, S. shortii, S. simmondsii, S. spathulatum, S. subspicatum, S. subulatum, S. tenuifolium, S. tradescantii, S. turbinellum, S. undulatum, S. urophyllum, S. walteri, S. welshii, S. yukonense, S. ×amethystinum
Subordinate taxa
S. foliaceum var. apricum, S. foliaceum var. canbyi, S. foliaceum var. foliaceum, S. foliaceum var. parryi
Synonyms Aster foliaceus Aster anomalus
Name authority (Lindley ex de Candolle) G. L. Nesom: Phytologia 77: 282. (1995) (Engelmann ex Torrey & A. Gray) G. L. Nesom: Phytologia 77: 275. (1995)
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