Helianthus cusickii A. Gray (Q2751)

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Helianthus cusickii is a taxon with the rank species within the genus Helianthus
Language Label Description Also known as
English
Helianthus cusickii A. Gray
Helianthus cusickii is a taxon with the rank species within the genus Helianthus

    Statements

    taxon/id/Helianthus cusickii A. Gray
    0 references
    Helianthus cusickii A. Gray
    Helianthus cusickii
    A. Gray
    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
    Cusick's sunflower (English)
    Cusick’s sunflower (English)
    1 reference
    Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
    Flowering late spring–summer.
    dry slopes
    open woods
    Stems erect to prostrate, glabrous or glabrate.
    mostly opposite, petioles 0–1 cm;
    blades (light to dark green, 3-nerved at bases) lance-linear to lanceolate, 5–15 × 0.5–2.5 cm, bases cuneate, margins entire, abaxial faces glabrous or scabro-hispid, glanddotted.
    Peduncles 2–10 cm.
    Involucres hemispheric, 12–28 mm diam.
    Phyllaries 12–18, lanceolate, 11–18 × 1.5–3 mm, apices acute to acuminate, abaxial faces glanddotted.
    Paleae (lanceolate) 9–13 mm, subentire or 3-toothed (apices sparsely hairy, sometimes glanddotted).
    Ray-florets 12–16;
    laminae 20–35 mm (abaxial faces glanddotted).
    Disc-florets 40+;
    corollas 6.5–7.5 mm, lobes yellow;
    anthers usually dull orange or orangebrown, sometimes yellowish, appendages dull orange to yellowish.
    Cypselae 4–5 mm, glabrate;
    pappi of 2 aristate scales 3–4.2 mm. 2n = 34.