Rudbeckia hirta Linnaeus (Q2786)

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Rudbeckia hirta is a taxon with the rank species within the section Rudbeckia sect. Rudbeckia
Language Label Description Also known as
English
Rudbeckia hirta Linnaeus
Rudbeckia hirta is a taxon with the rank species within the section Rudbeckia sect. Rudbeckia

    Statements

    taxon/id/Rudbeckia hirta Linnaeus
    0 references
    Rudbeckia hirta Linnaeus
    Rudbeckia hirta
    Linnaeus
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
    accepted
    black-eyed Susan (English)
    hairy coneflower (English)
    rudbeckie hirsute (French)
    marguerite jaune (French)
    rudbeckia hérissé (French)
    rudbeckie hérissée (French)
    Black-eyed Susan (English)
    Stems hispid to hirsute (hairs spreading, 1+ mm).
    Leaves: blades elliptic, lanceolate, or ovate (not lobed), bases attenuate to cuneate, margins entire or serrate, apices acute, faces hispid to hirsute;
    basal petiolate, blades 8–30 × 0.5–7 cm;
    cauline petiolate or sessile, blades (sometimes pandurate) 3–20 × 0.4–4 cm.
    Heads borne singly or (2–5) in loose, corymbiform arrays.
    Phyllaries to 3 cm (faces hispid to hirsute).
    Receptacles hemispheric to ovoid;
    paleae 4–6 mm, apices acute, often attenuate, abaxial tips hirsute to hispid.
    Ray-florets 8–16;
    laminae (usually uniformly yellow to yellow-orange or with a basal maroon splotch, sometimes mostly maroon) elliptic to oblong or oblanceolate, 15–45 × 5–10 mm, abaxially hispid to hirsute.
    Discs 12–22 × 10–20 mm.
    Disc-florets 250–500+;
    corollas proximally yellowish green, distally brown-purple, 3–4.2 mm;
    style-branches ca. 1.5 mm, apices subulate.
    Cypselae 1.5–2.7 mm;