Symphyotrichum patens (Aiton) G. L. Nesom (Q2514)

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Symphyotrichum patens is a taxon with the rank species within the subgenus Symphyotrichum subg. Virgulus
Language Label Description Also known as
English
Symphyotrichum patens (Aiton) G. L. Nesom
Symphyotrichum patens is a taxon with the rank species within the subgenus Symphyotrichum subg. Virgulus

    Statements

    taxon/id/Symphyotrichum patens (Aiton) G.L. Nesom
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    Symphyotrichum patens (Aiton) G.L. Nesom
    Symphyotrichum patens
    (Aiton) G.L. Nesom
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
    accepted
    Symphyotrichum patens
    late purple aster (English)
    spreading aster (English)
    Late purple or spreading aster (English)
    with short, thick, woody caudices, tangled or sometimes cormoid, and long rhizomes.
    Stems 1–5+, ascending to erect (often stout, light to dark-brown), sparsely to densely scabroso-hirsute to cinereo-puberulent, or villous distally.
    Leaves (light to dark green) thick and often stiff (margins flat, sometimes undulate), scabrous;
    basal early deciduous, subpetiolate (petioles winged, sheathing), blades spatulate to obovate, 30–70 × 10–30 mm, bases cuneate, margins entire to ± serrulate, scabrous, apices acute to rounded, faces scabroso-hirsute;
    proximal cauline sessile, blades usually ovate to lanceolate, rarely spatulate, (20–) 30–70 (–100) × 10–30 (–40) mm, reduced distally, bases strongly cordate-clasping to auriculate-amplexicaul (broadened below constriction), apices acute, faces (grayish green) rugulose, hairy (abaxial inconspicuously veined, adaxial reticulately veined, hairier along veins);
    distal sessile, blades narrowly to broadly ovate, 15–35 × 4–13 mm, much reduced on branches, bases strongly cordate-clasping to auriculate-amplexicaul, apices usually acute, sometimes obtuse, mucronate to white-spinulose, faces scabrous, sometimes sparsely to moderately stipitate-glandular.
    Heads in paniculiform arrays, branches divaricate (heads 1–5+ per branch), terminal shoot often not flowering.
    Peduncles stiffly ascending, slender, 2–10 (–15) cm, scabroso-hirsute to cinereo-puberulent, bracts appressed to spreading, linear, 1–5 mm, grading into phyllaries.
    Involucres campanulate, 5.5–12 mm.
    Phyllaries in 4–7 (–8) series, appressed or often slightly recurved-spreading or squarrose, ovatelanceolate to linear, strongly unequal, bases (tan) ± indurate in proximal 1/3–1/2, margins hyaline, erose, distally scabroso-ciliolate to ciliolate, green zones diamond-shaped, in distal 1/5–1/3, apices (outer) obtuse to acute, appressed to squarrose, (inner) acuminate, often purplish red, faces strigillose or cinereo-puberulent abaxially and near tip adaxially, sometimes moderately stipitate-glandular distally.
    Ray-florets 12–24+;
    corollas light lavender-violet to mauve, rarely white to pinkish, laminae 10–18 (–20) × 1–3 mm.
    Disc-florets 20–50;
    corollas yellow, cream, or white turning purple, (4.5–) 5.5–7.5 mm, tubes shorter than narrowly funnelform throats, lobes triangular, 0.5–1 mm (glabrous or lobes thinly puberulent).
    Cypselae dull purple or brown, obovoid to oblong-obovoid, not compressed, 2–3.5 mm, 7–10-nerved (faint), faces sericeous or strigillose;
    pappi tawny, sometimes rose-tinged, 4.5–6.5 mm.