Symphyotrichum ontarionis (Wiegand) G. L. Nesom (Q2447)

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Symphyotrichum ontarionis is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
Language Label Description Also known as
English
Symphyotrichum ontarionis (Wiegand) G. L. Nesom
Symphyotrichum ontarionis is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum

    Statements

    taxon/id/Symphyotrichum ontarionis (Wiegand) G.L. Nesom
    0 references
    Symphyotrichum ontarionis (Wiegand) G.L. Nesom
    Symphyotrichum ontarionis
    (Wiegand) 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 ontarionis
    Ontario aster (English)
    bottomland aster (English)
    Lake Ontario aster (English)
    aster d'Ontario (French)
    Ontario or bottomland aster (English)
    aster du lac Ontario (English)
    Stems 1– (2–3), ascending to erect (straight), proximally glabrate, distally uniformly villous or hirsute, or glabrous (var. glabratum).
    Leaves thin, margins scabrous, apices mucronate, abaxial faces usually sparsely to densely strigose or strigillose, sometimes glabrous (var. glabrum), adaxial usually strigose or scabrous, sometimes glabrate or glabrous (var. glabrum);
    basal withering by flowering, petiolate to subpetiolate (petioles narrowly winged, ciliate, bases sheathing), blades spatulate to oblanceolate-obovate, 10–40 × 5–10 mm, bases attenuate, margins crenate-serrate, apices acute to rounded;
    proximalmost cauline usually withering by flowering, petiolate or sessile (petioles narrowly winged, ± clasping), blades ovate or lanceovate to elliptic-lanceolate or oblanceolate, 20–80 (–12) × 5–35 mm, progressively reduced distally, bases attenuate to cuneate, margins serrate (sometimes coarsely) to crenate-serrate, apices acute to acuminate or short-caudate;
    distal sessile, blades elliptic-lanceolate to oblanceolate or lanceolate, (6–) 10–80+ × 2–25 mm, progressively reduced distally, bases cuneate, margins entire to serrulate, apices acute to acuminate.
    Heads in ample, open, paniculiform arrays, branches ± ascending or divaricate to long-arching, ± secund.
    Peduncles subsessile or 2–10 (–20) mm, ± pilose, bracts 1–5, linear-lanceolate, pilose, grading into phyllaries.
    Involucres campanulate, 3–5.5 mm.
    Phyllaries in (3–) 4–6 series, unequal, appressed or ± spreading, linear-obovate (outer) to oblong-lanceolate to linear (inner), bases indurate 1/3–3/4, margins narrowly scarious to apices, erose, hyaline, ciliate, green zones lanceolate, apices acute to acuminate, mucronulate, faces (outer) sparsely pilose or glabrous (var. glabratum), (inner) glabrous.
    Ray-florets (10–) 15–26;
    corollas usually white, rarely pinkish or light purple to blue, laminae 3.5–5.5 (–8) × 0.5–1.5 mm.
    Disc-florets 12–25;
    corollas cream or light yellow turning magenta or purple (ampliate), 2.5–4 (–4.5) mm, tubes shorter than funnelform throats, lobes slightly spreading to reflexed, lanceolate, 0.7–1.1 mm.
    Cypselae gray or tan, oblong-obovoid, sometimes ± compressed, 1.2–1.8 (–2) mm, 3–5-nerved, faces strigillose;
    pappi whitish to white, 3–3.5 mm.