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Helianthus pauciflorus subsp. pauciflorus
Family:
Asteraceae
stiff sunflower
[
Helianthus laetiflorus f. rigidus
(Cass.) B.Boivin,
more
Helianthus laetiflorus var. rigidus
(Cass.) Fern.
]
FNA
Web Links
Edward E. Schilling in Flora of North America (vol. 21)
Plants
80-200 cm.
Leaves
usually alternate distally; blades oblong-lanceolate to lance-ovate, 8-27 cm, apices acuminate. Flowering late summer-fall. Dry to moderately wet prairies, open places; 50-600+ m; Alta., B.C., Man., Ont., P.E.I., Que., Sask.; Ark., Conn., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Mass., Mich., Minn., Mo., Mont., Nebr., N.H., N.J., N.Dak., Okla., R.I., S.Dak., Tex., Vt., Va., Wis. Subspecies
pauciflorus
is introduced in Ontario, and probably in all eastern Canada.
BOLD Systems - Barcode of Life Data Systems
Encyclopedia of Life
Flora of North America
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International Plant Names Index
NCBI - National Center for Biotechnology Information
USDA PLANTS Database
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