Pycnanthemum setosum Nuttall. Awned Mountain-mint. Phen: Mid Jun-Aug; Aug-Oct. Hab: Loamy pine savannas, other dry to moist pinelands, hammocks, river bars, tidal swamps. Dist: NJ south to ne. FL and Panhandle FL, on the Coastal Plain; not known from MS (Sorrie & LeBlond 2008).

Origin/Endemic status: Endemic

Taxonomy Comments: See Wieboldt et al. (1998) for discussion of the taxonomy and rarity of this species. A tetraploid species (n = 38), probably an allotetraploid derived from P. flexuosum × muticum.

Synonymy: = C, Fl6, GW2, K1, K3, K4, RAB, Va, WH3, Chambers & Hamer (1992); = Koellia aristata (Michx.) Kuntze – S; = Pycnanthemum aristatum Michx. – Grant & Epling (1943); > Pycnanthemum setosum Nutt. – F, G; > Pycnanthemum umbratile Fernald – F, G

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