Difference between revisions of "Helianthella quinquenervis"
Proc. Amer. Acad. Arts 19: 10. 1883.
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|name=Helianthus quinquenervis | |name=Helianthus quinquenervis | ||
|authority=Hooker | |authority=Hooker | ||
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name=Helianthella quinquenervis | name=Helianthella quinquenervis | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Latest revision as of 20:11, 5 November 2020
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
Distribution
Ariz., Colo., Idaho, Mont., Nev., N.Mex., Oreg., S.Dak., Wyo., Mexico (Chihuahua, Nuevo León).
Discussion
Helianthella quinquenervis grows primarily in the Rocky Mountains, Great Basin ranges, and Black Hills.
Selected References
None.