Flora of the Southeastern United States
2022 Edition


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Helianthus pauciflorus Nuttall ssp. pauciflorus . Stiff Sunflower. Phen: Jul-Oct. Hab: Prairies, disturbed areas. Dist: ON and MI west to SD and SK, south to w. KY, n. MS, and TX. Reported for VA by Fernald (1950) under the name H. laetiflorus var. rigidus and for nc. GA by Jones & Coile (1988) under the name H. rigidus.

Origin/Endemic status: Native

Syn: = Ar, FNA21, K1, K3, K4, NE; = Helianthus pauciflorus var. pauciflorus – C; > Helianthus laetiflorus var. rigidus – F, Tx; < Helianthus pauciflorus – Il, Mi, NcTx; > Helianthus rigidus – S; ? Helianthus rigidus var. rigidus – SE1

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