familyAsteraceae
genusHelianthus
speciesHelianthus petiolaris
subspeciesHelianthus petiolaris subsp. petiolaris
Difference between revisions of "Helianthus petiolaris subsp. petiolaris"
Synonyms: Helianthus couplandii B. Boivin
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Revision as of 18:48, 24 September 2019
Stems usually hispidulous to strigillose, rarely ± hirsute to glabrate. Leaves: abaxial faces sparsely, if at all, gland-dotted. Peduncles usually bractless. Phyllaries 3–5 mm wide. Disc corollas: throats abruptly narrowed distal to densely hairy basal bulbs. 2n = 34.
Phenology: Flowering early summer–fall.
Habitat: Dry open areas, usually sandy soils
Elevation: 10–1500(–2000) m
Distribution
Alta., Man., Ont., Sask., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Iowa, Kans., La., Maine, Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., S.C., S.Dak., Tenn., Tex., Utah, Va., Wash., W.Va., Wis., Wyo.
Discussion
Subsp. petiolaris is native to western North America and adventive elsewhere (e.g., introduced in Ontario). Hybrids with with H. annuus and H. debilis have been reported.
Selected References
None.
Lower Taxa
None.
... more about "Helianthus petiolaris subsp. petiolaris"
Alta. +, Man. +, Ont. +, Sask. +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Va. +, Wash. +, W.Va. +, Wis. + and Wyo. +
Present +
J. Acad. Nat. Sci. Philadelphia +
1821 +
Helianthus petiolaris subsp. petiolaris +
Helianthus petiolaris +
subspecies +