SLENDER MOUNTAIN MINT
File Size: 84 KB
 
Pycnanthemum tenuifolium  Schrad.
Woodson County, Kansas
Perennial
Height: 16-40 inches
Family: Lamiaceae - Mint Family
Flowering Period:   July, August, September
Also Called: Slender-leaved mountain mint, narrowleaf mountain mint.
Stems: Erect, square, glabrous or angles sometimes minutely pubescent; upper portion branched.
Leaves: Opposite, sessile, linear or linear-lanceolate, .6 to 1.4 inches long, less than .25 inch wide, glabrous; margins entire, minutely fringed; tips narrowly pointed.
Inflorescences: Clusters, small, dense, 1/6 to 1/3 inch wide, solitary, terminal, arranged in compact corymbs.
Flowers: Sessile, calyces regular, tubular, 5-toothed, 10- to 13-nerved; teeth narrowly triangular, much shorter than tube; corolla whitish or occasionally pale lavender, 1/5 to 1/4 inch long, slightly 2-lipped, whitish-pubescent without, lightly pubescent within, much exceeding calyx; lips nearly equal in length; upper lip erect, entire or notched; lower lip bent downward, 3-lobed, purple spotted, middle lobe longer; stamens 4.
Fruits: Nutlets, egg-shaped or oval, 3-sided, dark brown, usually smooth.
Habitat: Moist open areas of upland prairies, meadows, pastures, open woods, and roadsides; limestone soils.
Distribution: East 1/3 of Kansas.
Uses: Some species of Pycnanthemum have been used medicinally to treat colds and fevers.
Comments: Often forms dense colonies.

Slender mountain mint flowers
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Woodson County, Kansas
Slender mountain mint inflorescence
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Woodson County, Kansas
Slender mountain mint
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Woodson County, Kansas
Slender mountain mint
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Woodson County, Kansas
Slender mountain mint leaves
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Woodson County, Kansas
Slender mountain mint flowers
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Jefferson County, Kansas