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Helianthus pauciflorus subsp. pauciflorus
Family:
Asteraceae
Stiff Sunflower
[
Helianthus laetiflorus var. rigidus
(Cass.) Fernald,
more
Helianthus missouriensis
Schwein. ex Nutt.,
Helianthus rigidus
(Cass.) Desf.,
Helianthus rigidus subsp. rigidus
,
Helianthus rigidus var. rigidus
(Cass.) Desf.
]
FNA
Resources
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.
Open Interactive Map
Foster, Nicholas
University of Florida Herbarium
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