Sonchus Linnaeus (Q3163)

From Canadian Flora Commons
Jump to navigation Jump to search
Sonchus is a taxon with the rank genus within the tribe Cichorieae
Language Label Description Also known as
English
Sonchus Linnaeus
Sonchus is a taxon with the rank genus within the tribe Cichorieae

    Statements

    taxon/id/Sonchus Linnaeus
    0 references
    Sonchus Linnaeus
    Sonchus
    Linnaeus
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
    accepted
    Sow-thistle (English)
    laiteron (English)
    Europe (Mediterranean)
    w Asia
    n Africa
    Atlantic Islands
    some species nearly worldwide
    Stems erect, branched distally or throughout, usually glabrous, sometimes stipitate-glandular (mostly distally).
    Leaves basal and cauline or mostly cauline;
    basal usually petiolate (petioles usually winged), cauline often sessile;
    blades mostly oblong, oblanceolate, or lanceolate, (bases often auriculate) margins usually 1 (–2) -pinnately lobed, ultimate margins usually dentate (teeth often ± prickly), sometimes entire.
    Heads borne in corymbiform to subumbelliform arrays.
    Peduncles not notably dilated distally, usually ± bracteolate, glabrous or stipitate-glandular and/or tomentose.
    Involucres campanulate to urceolate, 5–15+ mm diam.
    Phyllaries 27–50 in 3–5+ series, unequal, green, deltate to lanceolate or linear, margins sometimes narrowly scarious (sometimes ciliate), apices acute (faces glabrous or stipitate to setose-glandular).
    Receptacles flat to convex, ± pitted, glabrous, epaleate.
    Florets [30–] 80–250 [–450+];
    corollas yellow to orange (not deliquescent; anthers yellowish to brownish apically).
    Cypselae stramineous or reddish to dark-brown, ± compressed, mostly oblong or oblanceoloid to ellipsoid, beaks 0, ribs usually 2–4 (–5+) on each face, faces sometimes transversely rugulose or tuberculate, glabrous;
    pappi tardily falling or persistent, of 80–100+, white, smooth or barbellulate bristles (some flattened, ± setiform scales), outer usually distinct in ± 1 series, inner basally coherent or connate, in 2–3+ series.