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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

Synonymy: = Ar, FNA21, K1, K3, K4, NE; = Helianthus laetiflorus Pers. var. rigidus (Cass.) Fernald – F; = Helianthus pauciflorus Nutt. var. pauciflorus – C; = Helianthus rigidus (Cass.) Desf. var. rigidus – SE1; > Helianthus laetiflorus Pers. var. rigidus (Cass.) Fernald – Tx; < Helianthus pauciflorus Nutt. – Il, Mi, NcTx; > Helianthus rigidus (Cass.) Desf. – S

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Heliophily ?: 9

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image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© jim_keesling, some rights reserved (CC BY-NC), uploaded by jim_keesling source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© cassi saari, some rights reserved (CC BY-NC), uploaded by cassi saari source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© cassi saari, some rights reserved (CC BY-NC), uploaded by cassi saari source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© jim_keesling, some rights reserved (CC BY-NC), uploaded by jim_keesling source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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