Symphyotrichum laeve (Linnaeus) Á. Löve & D. Löve (Q2433)

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Symphyotrichum laeve is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum
Language Label Description Also known as
English
Symphyotrichum laeve (Linnaeus) Á. Löve & D. Löve
Symphyotrichum laeve is a taxon with the rank species within the section Symphyotrichum sect. Symphyotrichum

    Statements

    taxon/id/Symphyotrichum laeve (Linnaeus) Á. Löve & D. Löve
    0 references
    Symphyotrichum laeve (Linnaeus) Á. Löve & D. Löve
    Symphyotrichum laeve
    (Linnaeus) Á. Löve & D. Löve
    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
    (Linnaeus) Á. Löve & D. Löve
    smooth aster (English)
    smooth blue aster (English)
    glaucous aster (English)
    aster lisse (French)
    Smooth aster (English)
    aster lisse (English)
    ne Mexico
    in other areas of Mexico
    Central America
    Europe
    stoutly short-rhizomatous, with thick, woody caudices or a few, long rhizomes.
    Stems 1–5+, erect (straight, glaucous, sometimes reddish proximally), glabrous, sometimes sparsely hirsute distally.
    Leaves (glaucous) thick, firm, ± fleshy, margins crenate-serrate or serrulate or entire, scabridulous, apices mucronulate, faces glabrous;
    basal usually withering by flowering or sometimes persistent (var. purpuratum), petiolate (petioles ± winged, bases dilated, sheathing), blades spatulate or oblong to ovate or lanceolate-ovate, 30–200 × 10–25 (–30) mm, bases attenuate or cuneate to rounded, margins crenate-serrate to serrulate, apices acute to obtuse or rounded;
    proximal cauline often withering by flowering, petiolate or subsessile or sessile (petioles narrowly to broadly winged, clasping), blades ovate or oblong-ovate to lanceolate or linear-lanceolate, sometimes ± panduriform, (40–) 80–150 (–180) × (10–) 20–45 mm, bases attenuate to rounded or ± shallowly auriculate-clasping, margins entire or shallowly crenate-serrate, minutely scabrous, apices acute or obtuse, callus-pointed;
    distal sessile, blades lanceovate or lanceolate to linear, 7–45 × 1–14 mm, progressively reduced distally (abruptly so in arrays), bases auriculate and ± clasping to rounded, margins entire.
    Heads in broad, sometimes ± flat-topped, paniculiform arrays, branches stiffly ascending (rarely arching), leafy with small, gradually reduced branch leaves.
    Peduncles 0.2–6+ cm, glaucous, glabrous or puberulent in lines, bracts 3–6, densely spaced, subulate or linear-lanceolate to linear, subclasping, apices sometimes purplish, grading into phyllaries.
    Involucres campanulate to cylindro-campanulate, (4.2–) 5–7 (–8) mm.
    Phyllaries in 4–6 series, appressed, subulate or lanceolate (outer) to oblong-lanceolate or linear-lancolate or oblanceolate, unequal (sometimes appearing subequal), bases indurate 1/2–3/4, margins scarious, erose, hyaline, ciliolate distally, green zones mostly diamond-shaped to ± lanceolate (some inner, or most in var. geyeri), apices acute to acuminate, sometimes ± obtuse, red-mucronate or apiculate, faces glabrous.
    Ray-florets (11–) 13–23 (–34);
    corollas usually pale to dark blue or purple, seldom white, laminae (6–) 7.2–11.3 (–14.6) × 1.5–2.5 mm.
    Disc-florets (17–) 19–33 (–43);
    corollas yellow turning purplish red, 3.5–6.1 mm, tubes slightly shorter than funnelform throats, lobes triangular, (0.4–) 0.6–1 mm.
    Cypselae deep purple to brown, oblong-obovoid, compressed, 2–3.5 mm, 4–5-nerved, faces glabrous or glabrate;
    pappi tawny to red or rose-tinged, 5–7 mm.