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Pycnanthemum flexuosum (Walter) Britton, Sterns, & Poggenburg. Savanna Mint, Savanna Mountain-mint. Phen: Jun-Sep; Sep-Oct. Hab: Moist to wet pine savannas, pine flatwoods, pocosin margins, mountain bogs, seepage areas on low elevation granite domes. Dist: Se. VA south to ne. FL, west to Panhandle FL and s. MS (Sorrie & LeBlond 2008) on the Coastal Plain; disjunct inland in bogs and rock outcrops of sw. NC with Coastal Plain affinities, and in sc. TN.

ID notes:Sometimes mistaken in vegetative condition for Eupatorium leucolepis, P. flexuosum can be distinguished by its square stem and aromatic odor.

Origin/Endemic status: Endemic

Taxonomy Comments: A diploid species (n = 18). Koellia hugeri Small, alleged to differ details of the calyx, was established for the plants of bogs of the Blue Ridge; it apparently is not morphologically segregated from other variation within the species (Grant & Epling 1943).

Synonymy: = C, F, Fl6, K1, K3, K4, RAB, Va, W, WH3, Chambers & Hamer (1992); = Pycnanthemum hyssopifolium Benth. – G, GW2, Grant & Epling (1943); > Koellia hugeri Small – S; > Koellia hyssopifolia (Benth.) Britton – S

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FACW

Heliophily: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Will Stuart | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷

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