Symphyotrichum dumosum (Linnaeus) G. L. Nesom (Q2420)

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

    Statements

    taxon/id/Symphyotrichum dumosum (Linnaeus) G.L. Nesom
    0 references
    Symphyotrichum dumosum (Linnaeus) G.L. Nesom
    Symphyotrichum dumosum
    (Linnaeus) 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 dumosum
    aster touffu (French)
    bushy aster (English)
    rice button aster (English)
    Bushy aster (English)
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    1 reference
    Hinds, H.R. 2000. Flora of New Brunswick : a manual for the identification of the vascular plants of New Brunswick. 2nd edition. Biology Department, University of New Brunswick, Fredericton. 699 pp.
    Flowering Aug–Oct.
    wooded
    moist or wet soils
    sedge meadows
    marshes
    swamps
    flood plains
    calcareous
    loamy prairies
    old fields
    sandhills
    flatwoods
    hammocks
    pine-hickory woods
    pine thickets
    secondary woods
    sandy to mucky
    sandy to marly shores
    interdunal hollows
    usually long-rhizomatous, often thick, woody, sometimes short, or with short, stout caudices.
    Stems 1–5+, erect (straight, often slender, brittle), densely or sparsely strigose to glabrescent or glabrate.
    Leaves firm, margins entire to crenulate-serrate, recurved, scabrous, apices sharply white-mucronate, abaxial faces glabrous or glabrate to sparsely strigillose, adaxial glabrous or glabrate to submarginally scabrous (short-strigose), cauline withering by flowering (except on array branches), often with axillary leaf clusters;
    basal withering by flowering, petiolate, petioles winged, sheathing, strigose-ciliate, blades oblanceolate to spatulate (often declined), 8–50 × 3–15 mm, bases attenuate to cuneate, margins crenate-serrate, apices obtuse or rounded to ± acute;
    proximal cauline (mostly declined) subpetiolate (petioles widely winged, clasping) or sessile (then not or barely clasping), blades linear-oblanceolate, 25–120 × 1.5–9 mm, bases cuneate to slightly attenuate;
    distal (ascending or spreading) sessile, blades oblong or linear-lanceolate to linear, 2–45 × 0.5–4 mm, reduced distally (abruptly on branches), bases cuneate to rounded, not clasping, margins entire or serrate.
    Heads in remote, diffuse, open, paniculiform arrays, branches numerous, ascending to stiffly ascending, secondary ones stiff, racemiform (usually not secund).
    Peduncles slender, usually stiff (sometimes lax), (0.5–) 1–5 cm (rarely subsessile), progressively reduced distally, usually not secund, sparsely strigillose or glabrous, bracts 5–16+, spreading to ascending, linear-oblong or elliptic to subulate or linear, progressively reduced distally, grading into phyllaries.
    Involucres cylindro-campanulate, (3–) 4.5–6.3 mm.
    Phyllaries in 4–6 series, appressed or slightly spreading, oblong-oblanceolate (outer) to linear-oblanceolate or linear (innermost), strongly unequal, bases indurate (1/2–) 2/3–4/5, margins hyaline, scarious, erose, distally ciliolate, green zones oblanceolate to elliptic (subapical), apices acute to obtuse (scarious), sometimes faintly reddish, mucronulate, faces usually glabrous, sometimes glabrate.
    Ray-florets 15–33;
    corollas pale blue, pink, or lavender to white, laminae (4–) 5–7 (–8) × 1–1.7 mm.
    Disc-florets 15–30;
    corollas cream to pale-yellow turning pink, 3.5–4.5 mm, tubes shorter than to equal to narrowly funnelform throats, lobes lanceolate, (0.4–) 0.6–1.1 mm.
    Cypselae pink or stramineous with pink streaks, or gray (± dark, nerves stramineous), oblong-obovoid, sometimes ± compressed, 1.5–2.5 mm, 3–4-nerved (nerves prominent), faces strigillose;
    pappi white to sordid, 4 mm. 2n = 16, 32.