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Symphyotrichum ericoides L.
HEATH ASTER
Aster ericoides; White heath aster

Life   Plantae   Dicotyledoneae   Asteraceae   Symphyotrichum

Symphyotrichum pilosum, Awl-Aster
© Copyright Sheryl Pollock 2011 · 1
Symphyotrichum pilosum, Awl-Aster

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Symphyotrichum pilosum, Awl Aster
© Copyright Sheryl Pollock 2011 · 1
Symphyotrichum pilosum, Awl Aster
Symphyotrichum racemosum, Small White Aster
© Copyright Sheryl Pollock 2011 · 1
Symphyotrichum racemosum, Small White Aster

Symphyotrichum racemosum, Small White Aster
© Copyright Sheryl Pollock 2011 · 1
Symphyotrichum racemosum, Small White Aster

Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena chromotricha @ AMNH_BEE (1)

Andrena hirticincta @ AMNH_BEE (2)

Perdita bruneri @ AMNH_BEE (1)

Pseudopanurgus renimaculatus @ AMNH_BEE (2)
Apidae  Bombus griseocollis @ AMNH_BEE (1)

Bombus rufocinctus @ AMNH_BEE (1)

Bombus ternarius @ AMNH_BEE (2)

Bombus terricola @ AMNH_BEE (2)

Bombus vagans @ AMNH_BEE (1)
Colletidae  Colletes americanus @ AMNH_BEE (2)

Colletes rufocinctus @ AMNH_BEE (1)

Hylaeus leptocephalus @ AMNH_BEE (1)
Dictyopharidae  Scolops sulcipes @ AMNH_IZC (1)
Halictidae  Halictus ligatus @ AMNH_BEE (3)

Halictus rubicundus @ AMNH_BEE (1)

Lasioglossum imitatum @ AMNH_BEE (1)

Lasioglossum pruinosum @ AMNH_BEE (1)

Lasioglossum semicaeruleum @ AMNH_BEE (4)

Sphecodes davisii @ AMNH_BEE (1)
Megachilidae  Megachile relativa @ AMNH_BEE (1)

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Following modified from Flora of North America
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FNA | Family List | FNA Vol. 20 | Asteraceae | Symphyotrichum

22. Symphyotrichum ericoides (Linnaeus) G. L. Nesom, Phytologia. 77: 280. 1995.

White heath aster, aster éricoïde

Aster ericoides Linnaeus, Sp. Pl. 2: 875. 1753; Lasallea ericoides (Linnaeus) Semple & Brouillet; Virgulus ericoides (Linnaeus) Reveal & Keener

Perennials, 20—80(—100) cm, colonial or cespitose, eglandular; branched rhizomatous, or with ± cormoid, branched, woody caudices. Stems 1—3+, ascending to erect (grayish brown to brown), sparsely to densely hispido-strigose, sometimes glabrescent proximally. Leaves usually all except rameal withered by flowering, (light grayish green) firm apices ± white-spine-tipped (often with clusters of smaller leaves in axils); basal sessile, blades (3-nerved) oblanceolate to oblong or spatulate, 10—50 × 10—25 mm, bases attenuate, margins usually entire, rarely remotely serrate, scabrous, apices rounded to obtuse, faces usually sparsely hairy, often glabrous; proximal cauline sessile, blades (1- or 3-nerved) linear to lanceolate or oblong, 10—40(—60) × 1.5—4(—7) mm, reduced distally, bases cuneate, coarsely ciliate, margins entire, coarsely ciliate, apices acute or obtuse, faces moderately to densely strigose or hirsute; distal sessile, blades oblong-ovate, 10—40 × 1.5—3.5 mm, abruptly reduced distally, bases cuneate, margins entire, apices acute, faces moderately to densely strigose. Heads (1—200+) in paniculiform arrays, branches fastigiate or arrays often pyramidal, racemiform, secund, crowded. Peduncles 0.5—1(—2) cm or subsessile, densely hairy, bracts dense, linear to narrowly lanceolate, usually reflexed, sometime appressed to ascending, 1.5—5(—6) mm, densely hairy, grading into phyllaries. Involucres cylindric to campanulate, 2.5—4.5(—5) mm. Phyllaries in 3—4 series, oblanceolate to ± spatulate, unequal, firm, bases (whitish to tan) ± indurate in proximal 1 / 2 — 2 / 3 , margins hyaline, scabrous proximally, green zones diamond-shaped, in distal 1 / 2 , apices spine-tipped, (outer) spreading to reflexed or squarrose, faces (outer) sparsely to densely hispid, scabroso-hirsute adaxially, (inner) glabrous. Ray florets (8—)10—18(—20); corollas usually white, rarely pink or bluish, laminae 6—12(—20) × 0.7—1.2 mm. Disc florets 6—12(—20); corollas yellow becoming brown, 2.5—4 mm, throats narrowly funnelform, lobes triangular, 0.5—0.6 mm, glabrous. Cypselae deep purple turning brown, obovoid to oblong-obovoid, ± falcate, not compressed, 1.2—2 × 0.4—0.6 mm, 7—9-nerved (faint), faces sericeous or densely strigillose; pappi whitish, 3—4 mm.

Varieties 2 (2 in the flora): North America, n Mexico.

Symphyotrichum ericoides resembles S. pilosum var. pilosum , which has larger heads, longer rays, and phyllaries that are not spine-tipped, though the revolute margins can make them appear so. Two subspecies and four weakly separated varieties of S. ericoides were recognized by A. G. Jones (1978). Tetraploids of var. ericoides on the eastern prairies can be difficult to distinguish from S. falcatum . A number of aster cultivars are sold under the name "Aster ericoides." These are all derived from European garden plants and are either cultivars of S. dumosum, S. lateriflorum, S. pilosum , or S. racemosum , or hybrids involving one of those species and another taxon. The misapplication of the epithet ericoides dates back to the nineteenth century and has persisted in the horticultural literature.

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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Symphyotrichum+ericoides+var.+ericoides&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Symphyotrichum+ericoides+var.+ericoides&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2017-12-11 10:19:13 gmt
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