Helianthus cusickii A. Gray (Q2751)
Helianthus cusickii is a taxon with the rank species within the genus Helianthus
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English |
Helianthus cusickii A. Gray
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Helianthus cusickii is a taxon with the rank species within the genus Helianthus
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Statements
taxon/id/Helianthus cusickii A. Gray
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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
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CA-BC
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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.
US-CA
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US-ID
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US-NV
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US-OR
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US-WA
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600–2000 m
600 meter
2,000 meter
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Stems erect to prostrate, glabrous or glabrate.
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mostly opposite, petioles 0–1 cm;
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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.
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Peduncles 2–10 cm.
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Involucres hemispheric, 12–28 mm diam.
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Phyllaries 12–18, lanceolate, 11–18 × 1.5–3 mm, apices acute to acuminate, abaxial faces glanddotted.
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Paleae (lanceolate) 9–13 mm, subentire or 3-toothed (apices sparsely hairy, sometimes glanddotted).
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Ray-florets 12–16;
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laminae 20–35 mm (abaxial faces glanddotted).
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Disc-florets 40+;
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corollas 6.5–7.5 mm, lobes yellow;
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anthers usually dull orange or orangebrown, sometimes yellowish, appendages dull orange to yellowish.
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Cypselae 4–5 mm, glabrate;
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pappi of 2 aristate scales 3–4.2 mm. 2n = 34.
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