Helianthella quinquenervis

(Hooker) A. Gray

Proc. Amer. Acad. Arts 19: 10. 1883.

Basionym: Helianthus quinquenervis Hooker London J. Bot. 6: 247. 1847
Treatment appears in FNA Volume 21. Treatment on page 116. Mentioned on page 115.
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Plants (30–)50–150 cm. Cauline leaves: largest proximal to mid stems; blades usually 3– or 5–nerved, elliptic or ovate-lanceolate to lanceolate, 10–50 cm, faces sparsely hirsute or glabrous. Heads usually borne singly, ± nodding. Involucres hemispheric or broader, (25–)40–50 mm diam. Phyllaries (outer sometimes ± foliaceous) ovate to lanceolate (subequal to unequal, margins ciliate). Paleae scarious, relatively soft. Ray florets (13–)21; (corollas bright yellow) laminae 25–30(–40) mm. Disc corollas yellow. Cypselae strongly compressed, narrowly obovate (margins ciliate, faces strigose); pappi of 2 ± subulate scales plus 2–4+ shorter scales.

Phenology: Flowering Jun–Aug(–Oct).
Habitat: Moist meadows, aspen glades
Elevation: 1400–3600 m



Ariz., Colo., Idaho, Mont., Nev., N.Mex., Oreg., S.Dak., Wyo., Mexico (Chihuahua, Nuevo León).


Helianthella quinquenervis grows primarily in the Rocky Mountains, Great Basin ranges, and Black Hills.

Selected References


Lower Taxa

William A. Weber +
(Hooker) A. Gray +
Helianthus quinquenervis +
Ariz. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, S.Dak. +, Wyo. +, Mexico (Chihuahua +  and Nuevo León). +
1400–3600 m +
Moist meadows, aspen glades +
Flowering Jun–Aug(–Oct). +
Proc. Amer. Acad. Arts +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Helianthella quinquenervis +
Helianthella +
species +