Symphyotrichum lateriflorum |
Symphyotrichum greatae |
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aster latériflore, calico American-aster, calico aster, calico or one-side or white woodland or starved aster |
Greata's aster |
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Habit | Perennials, 20–120(–150) cm, cespitose; with short, woody, branched caudices, or short-rhizomatous. | Perennials 50–150(–200) cm, colonial; long-rhizomatous. |
Stems | 1–5+, ascending to erect (± arching, slender, brittle), ± densely pilose or villous to glabrate or glabrous (particularly proximally). |
1–5, ascending to erect, sparsely hispid distally. |
Leaves | thin, membranous, margins serrate to serrulate, scabridulous, apices acute to acuminate, sometimes caudate, mucronulate, abaxial faces glabrous, midveins usually ± densely pilose to glabrate, rarely glabrous, adaxial scabrous (short-strigose) to glabrate; basal usually withering by flowering, sometimes persisting (new vernal rosettes often developing at flowering), petiolate to subpetiolate (petioles narrowly to ± broadly winged, ciliate, bases ± sheathing), blades oblanceolate, lance-ovate or ovate to spatulate or suborbiculate, 5–35 × 7–25 mm, abruptly attenuate, margins crenate-serrate, apices obtuse to rounded or acute; proximal cauline mostly withering by flowering, sessile or subpetiolate (petioles broadly winged), blades usually ovate or elliptic to elliptic-oblanceolate or lanceolate, rarely linear-lanceolate, (30–)50–100(–150) × (2–)10–20(–35) mm, greatly reduced distally, bases attenuate to cuneate; distal sessile, blades ovate, lance-ovate, lance-elliptic, or oblanceolate to lance-linear or linear, 10–150 × 1–30 mm, progressively reduced distally, branch leaves abruptly smaller, bases cuneate, margins sometimes entire. |
thin, margins entire to serrate, apices acute, faces scabrous; basal withering by flowering, petiolate, blades elliptic to obovate 30–300 × 15–50 mm, attenuate, margins entire to serrate, apices acute, faces rough-hispidulous; proximalmost cauline sometimes withering by flowering, sessile, blades elliptic to obovate, 100–200 × 20–50 mm, bases rounded to ± clasping, sometimes auriculate, apices acute; distal sessile, blades 20–150 × 10–40 mm, bases cuneate, usually auriculate, apices acute. |
Peduncles | sparsely hairy, bracts lanceolate to linear. |
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Involucres | cylindro-campanulate, (3.5–)4–6(–7) mm. |
campanulate, 5–8 mm. |
Ray florets | 8–15(–23); corollas white, rarely pinkish or purplish, laminae (3–)4–5(–8) × 0.9–1.2 mm. |
15–40; corollas violet, laminae 8–15 × 1–2 mm. |
Disc florets | 8–16(–20); corollas cream to light yellow turning pink or reddish purple, (2.5–)3–5 mm, tubes shorter than funnelform-campanulate throats, lobes strongly reflexed, lanceolate, 0.9–1.7 mm. |
35–60+; corollas yellow, 3.5–4 mm, lobes triangular, 0.5–0.8 mm. |
Phyllaries | in 3–4(–6) series, appressed or slightly spreading, oblong-lanceolate or -oblanceoalte (outer) to linear (inner), unequal, bases indurate 1/3–2/3, margins scarious, erose, hyaline or sometimes reddish, ± ciliolate, green zones lanceolate to ± diamond-shaped, apices (outer) acute, callus-pointed, (mid) acute to acuminate, or obtuse, sometimes purplish, abaxial faces glabrous (outer), mid sparsely puberulent. |
in 4–6 series, narrowly oblong (outer) to linear (inner), unequal to subequal, bases scarious, margins scarious, entire, green zones lanceolate to narrowly elliptic, apices acute, faces glabrate or puberulent. |
Heads | in ample, open, diffuse, ± pyramidal, paniculiform arrays, branches divaricate to long-arching or ± ascending, slender, wiry, secund; usually sessile, sometimes peduncles 0.1–1 cm+, ± pilose, bracts 1–7, linear or subulate to oblong-lanceolate, foliaceous, grading into phyllaries. |
in paniculiform arrays, branches 10–30 cm. |
Cypselae | gray or tan, oblong-obovoid, sometimes ± compressed, (1.3–)1.8–2.2 mm, 3–5-nerved, faces sparsely strigillose; pappi white to pinkish, 3–4 mm. |
brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, 3–4-nerved, faces hairy; pappi white, 3.5–4 mm. |
2n | = 16, 32, 48. |
= 16. |
Symphyotrichum lateriflorum |
Symphyotrichum greatae |
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Phenology | Flowering Aug–Oct. | Flowering Aug. |
Habitat | Relatively shaded habitats, dry to humid soils, usually deciduous woodlands (beech–maple, oak–hickory, mixed hardwoods), sometimes conifer woods, sometimes swamp forests (conifer or dediduous), edges of woods, meadows, usually rocky or sandy stream and pond shores, roadsides | Damp places in chaparral canyons |
Elevation | 0–400 m (0–1300 ft) | 500–1500 m (1600–4900 ft) |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; MB; NB; NS; ON; PE; QC
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CA
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Discussion | Symphyotrichum lateriflorum has been reported in British Columbia as an ephemeral that did not persist. G. L. Nesom (1994b) and J. C. Semple et al. (2002) recognized several varieties within the complex: var. lateriflorum (syn. Aster vimineus Lamarck); var. angustifolium (Wiegand) G. L. Nesom (syn. A. lateriflorus var. angustifolius Wiegand); var. flagellare (Shinners) G. L. Nesom (syn. A. lateriflorus var. flagellaris Shinners, A. lateriflorus var. indutus Shinners); var. hirsuticaule (Lindley ex de Candolle) G. L. Nesom [syn. A. hirsuticaulis Lindley ex de Candolle, A. lateriflorus var. hirsuticaulis (Lindley ex de Candolle) Porter]; var. horizontale (Desfontaines) G. L. Nesom [syn. A. horizontalis Desfontaines, A. lateriflorus var. horizontalis (Desfontaines) Farwell]; var. spatelliforme (E. S. Burgess) G. L. Nesom [syn. A. spatelliformis E. S. Burgess, A. lateriflorus var. spatelliformis (E. S. Burgess) A. G. Jones]; and var. tenuipes (Wiegand) G. L. Nesom (syn. A. lateriflorus var. tenuipes Wiegand, A. acadiensis Shinners). Much genetic and phenotypic variation is encountered within the complex; a thorough study is needed before a coherent taxonomy can be achieved. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Symphyotrichum greatae is known from the south slopes of the San Gabriel Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 517. | FNA vol. 20, p. 532. |
Parent taxa | Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Symphyotrichum | Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales |
Sibling taxa | ||
Synonyms | Solidago lateriflora, Aster lateriflorus | Aster greatae |
Name authority | (Linnaeus) Á. Löve & D. Löve: Taxon 31: 359. (1982) | (Parish) G. L. Nesom: Phytologia 77: 283. (1995) |
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