Family: Lamiaceae
narrow-leaved mountain mint, slender mountain mint
[Koellia flexuosa auct. non (Walter) MacMill.]
Emmet J. Judziewicz
Emmet J. Judziewicz
University of Wisconsin - Madison (WIS-VP)
Etymology: Pycnanthemum: from Greek pychnos, "dense," and anthemon, "flower," so "densely flowered"
Plants: erect, perennial, 20"-32" tall forb, almost odorless; stems square, hairless, very leafy with many short branches
Leaves: opposite, linear, very narrow, small, toothless
Flowers: pink to white, 5-parted, 1/4"-1/3" long;
inflorescence a 3" wide, branched, terminal, umbel-like cluster of many, very dense, small, rounded heads; blooms July-Sept.
Fruits: 1-seeded nutlet
Habitat: dry; upland woods, prairies
Conservation Status: Introduced - locally established
Plants: erect, perennial, 20"-32" tall forb, almost odorless; stems square, hairless, very leafy with many short branches
Leaves: opposite, linear, very narrow, small, toothless
Flowers: pink to white, 5-parted, 1/4"-1/3" long;
inflorescence a 3" wide, branched, terminal, umbel-like cluster of many, very dense, small, rounded heads; blooms July-Sept.Fruits: 1-seeded nutlet
Habitat: dry; upland woods, prairies
Conservation Status: Introduced - locally established
Introduced from farther south and east, our few collections are from roadsides, fields, ditches, marshy areas, wet meadows, and along railroad tracks. First collected in 1916. This species is said to produce no fragrance when fresh, unlike the aromatic P. virginianum. Although there is slight overlap in leaf blade width at the extremes, the other characters will readily separate the two species.
Floristic Rating: Wetland Indicator = FAC USDA Plants Database: Federal Distribution and detailed information including photos Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key
Emmet J. Judziewicz
Emmet J. Judziewicz
