Helianthus pauciflorus subsp. subrhomboideus

(Rydberg) O. Spring & E. E. Schilling

Biochem. Syst. & Ecol. 18: 22. 1990.

Common names: Hélianthe subrhomboïdal
Endemic
Basionym: Helianthus subrhomboideus Rydberg Mem. New York Bot. Gard. 1: 419. 1900
Synonyms: Helianthus laetiflorus var. subrhomboideus (Rydberg) Fernald Helianthus pauciflorus var. subrhomboideus (Rydberg) Cronquist Helianthus rigidus subsp. subrhomboideus (Rydberg) Heiser Helianthus rigidus var. subrhomboideus (Rydberg) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 161. Mentioned on page 160.

Plants 50–120 cm. Leaves opposite; blades rhombic-ovate to lance-linear, 5–12 cm, apices acute or obtuse.


Phenology: Flowering summer–early fall.
Habitat: Dry, open places
Elevation: 400–2400 m

Distribution

V21-387-distribution-map.gif

Alta., Man., N.B., N.S., Ont., Que., Sask., Colo., Conn., Ill., Ind., Iowa, Kans., Maine, Mass., Minn., Mo., Mont., Nebr., N.H., N.J., N.Mex., N.Dak., Pa., R.I., S.Dak., Tex., Vt., Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
Edward E. Schilling +
(Rydberg) O. Spring & E. E. Schilling +
Helianthus subrhomboideus +
Hélianthe subrhomboïdal +
Alta. +, Man. +, N.B. +, N.S. +, Ont. +, Que. +, Sask. +, Colo. +, Conn. +, Ill. +, Ind. +, Iowa +, Kans. +, Maine +, Mass. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.H. +, N.J. +, N.Mex. +, N.Dak. +, Pa. +, R.I. +, S.Dak. +, Tex. +, Vt. +, Wis. +  and Wyo. +
400–2400 m +
Dry, open places +
Flowering summer–early fall. +
Biochem. Syst. & Ecol. +
Helianthus laetiflorus var. subrhomboideus +, Helianthus pauciflorus var. subrhomboideus +, Helianthus rigidus subsp. subrhomboideus +  and Helianthus rigidus var. subrhomboideus +
Helianthus pauciflorus subsp. subrhomboideus +
Helianthus pauciflorus +
subspecies +