Symphyotrichum pygmaeum (Lindl.) Brouillet & Selliah

Species

Angiosperms > Asterales > Asteraceae > Symphyotrichum

Characteristics

Perennials 1.5–15 cm, cespitose; with short, branched caudices, long-rhizomatous (both wiry). Stems 1–10+, decumbent to ascending (purple), sparsely or densely villous to woolly distally. Leaves firm, margins usually entire, sometimes remotely pauci-serrulate, sparsely villoso-ciliate, apices obtuse to acute, sometimes mucronate; basal often withering by flowering, petiolate (petioles widely winged, sheathing), blades spatulate, 5–19 × 2–4 mm, bases attenuate, apices rounded, faces glabrous or sparsely villous proximally; proximal sessile, blades lanceolate to oblong-lanceolate or (sometimes)-spatulate, 30–50 × 3–10 mm, bases ± clasping, apices obtuse to acute, faces glabrous or sparsely villous; distal sessile, blades lanceolate to oblong, 13–19 × 2–4.5 mm, bases clasping to cuneate, apices acute to obtuse, faces sparsely woolly, sometimes sparsely stipitate-glandular. Heads borne singly. Peduncles densely villous to lanate distally, bracts 0. Involucres hemispherico-campanulate, 9–12.5 mm. Phyllaries in 3–4 series (dark purple), lance-oblong or oblong (outer) to linear-lanceolate or sometimes linear (inner), subequal, outer ± herbaceous, bases not indurate, margins herbaceous (outer) to narrowly scarious and erose proximally (inner), strongly purple, villoso-ciliate in green portion, green zones (inner) 1 / 2 – 2 / 3 of distal portions, apices acute to acuminate, inner sometimes apiculate, appressed to loose and squarrose (particularly outer), faces woolly to densely villous, sparsely to moderately stipitate-glandular. Ray florets 16–28; corollas purple to violet, laminae 12–18 × 2–3.2 mm. Disc florets 53–55; corollas yellow, 5.6–6.5 mm, throats funnelform, lobes triangular, 0.5–0.8 mm (red or white clavate-hairy). Cypselae fusiform to cylindro-obconic, ± compressed, [size unknown], 4–7-nerved (faint), faces ± densely strigillose; pappi whitish to yellowish, 5–7.2 mm.
Life form perennial
Growth form herb
Growth support free-standing
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Sexuality hermaphrodite
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Environment

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Hardiness (USDA) 4-9

Usage

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Cultivation

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Images

Symphyotrichum pygmaeum unspecified picture

Distribution

Symphyotrichum pygmaeum world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:60439844-2
WFO ID wfo-0000122202
COL ID 7B6JH
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Symphyotrichum pygmaeum Aster pygmaeus Eurybia pygmaea Aster sibiricus subsp. pygmaeus Aster sibiricus var. pygmaeus