Erechtites Rafinesque (Q2883)

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Erechtites is a taxon with the rank genus within the tribe Senecioneae
Language Label Description Also known as
English
Erechtites Rafinesque
Erechtites is a taxon with the rank genus within the tribe Senecioneae

    Statements

    taxon/id/Erechtites Rafinesque
    0 references
    Erechtites Rafinesque
    Erechtites
    Rafinesque
    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
    Fireweed (English)
    North America
    West Indies
    South America
    Pacific Islands (New Zealand)
    Australia
    some species widely scattered as weeds
    Stems usually 1, usually erect.
    petiolate or sessile;
    blades pinnately nerved, mostly ovate to lanceolate (sometimes pinnately lobed or dissected), ultimate margins entire, denticulate, or toothed, faces glabrous or ± tomentose or villous (often unevenly glabrescent).
    Heads disciform, in cymiform or corymbiform arrays.
    Calyculi of 1–6 [–12+] bractlets.
    Involucres urceolate or cylindric to turbinate, 2–10+ mm diam.
    Phyllaries persistent, usually (5), 8, 13, or 21 in 1–2 series, erect (sometimes reflexed in fruit), distinct (margins ± interlocking), lanceolate to linear, equal, margins ± scarious (tips green or with minute dark spots).
    Receptacles flat to convex, ± foveolate or smooth, epaleate.
    Peripheral (pistillate) florets 10–100+ (in 1–3+ series), corollas whitish to pale-yellow, tubular-filiform, lobes 4–5, deltate, erect.
    Disc-florets (3–) 10–20 (–50+), mostly bisexual and fertile, inner sometimes functionally staminate;
    corollas whitish to pale-yellow [pinkish], tubes longer than funnelform throats, lobes 4–5, erect to spreading, lanceovate;
    style-branches stigmatic in 2 lines, apices truncate-penicillate.
    Cypselae (stramineous to brown or purple) ± prismatic and 5-angled or ribbed or ± obovoid to ± fusiform and 10–20-nerved, glabrous or puberulent (on or between ribs or nerves);
    pappi readily falling, of 60–120, white [reddish], barbellulate bristles.