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Lamiaceae
Pycnanthemum

not marked as a favorite taxon Pycnanthemum verticillatum (Michaux) Persoon. Common name: Whorled Mountain-mint. Phenology: Jul-Sep. Habitat: Upland rocky woodlands. Distribution: VT west to MI, south to NC and KY.

Glossary (beta!)

Origin/Endemic status: Native

Taxonomy Comments: A tetraploid species (n = 38-39).

Synonymy ⓘ: = Ar, F, G, K4, Mi, Tat, Tn, Chambers & Hamer (1992), Grant & Epling (1943); = Koellia verticillata (Michx.) Kuntze — S; = Pycnanthemum verticillatum (Michx.) Pers. var. verticillatum — C, NE, NY, Pa, Va; < Pycnanthemum verticillatum (Michx.) Pers. — Il, RAB, W. Basionym: Brachystemum verticillatum Michx. 1803

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: FAC (taxonomic split from wetland indicator species)
  • Great Plains: FACW (taxonomic split from wetland indicator species)
  • Midwest: FAC (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FAC (taxonomic split from wetland indicator species)

Heliophily ⓘ: 7

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image #1 of Pycnanthemum verticillatum© Gary P. Fleming | Original Image ⭷
image #2 of Pycnanthemum verticillatum© Gary P. Fleming | Original Image ⭷
image #3 of Pycnanthemum verticillatum© Gary P. Fleming | Original Image ⭷
image #4 of Pycnanthemum verticillatum© Emily Oglesby | Original Image ⭷
image #5 of Pycnanthemum verticillatum© Gary P. Fleming | Original Image ⭷

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Horticultural Information

NCBG trait

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Height: 1-3 ft.

plant sale text: Whorled mountain-mint is a vigorous clumping perennial whose highly aromatic leaves look like they have been lightly frosted on top. In mid-late summer, the stems get topped by white flowers speckled with pink and purple that attract a wide variety of bees, butterflies and wasps. This plant can spread by rhizomes so either give it ample space in a meadow or plan to prune the roots by shovel each year to limit its space in a more formal garden.

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native range: eastern North America



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