Plant Index

 
 
 
 

Pycnanthemum muticum

Pycnanthemum muticum (Michx.) Pers.

short-toothed mountain-mint, clustered mountainmint

Synonym(s): Koellia mutica
Pycnanthemum muticum (Short-toothed Mountain-mint)
Image ID: 25655
Image by: Pippen, Jeffrey S.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: PYMU
SCIENTIFIC NAME: Pycnanthemum muticum
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2019-03-15

GENUS INDEX

GENUS CODE: PYCNA
GENUS SCIENTIFIC: Pycnanthemum
GENUS AUTHORITY: Michx.
GENUS COMMON: Mountainmint
GENUS SUMMARY: A genus of 20-25 species, herbs, of temperate North America. Pycnanthemum remains a complicated and difficult group, with speciation apparently having proceeded by allopolyploidy, autoploidy, and aneuploidy. Numerous aberrant forms and (probably) sterile hybrids complicate identification and understanding.
GENUS IDENTIFICATION:
GENUS REFERENCES: Chambers (1993); Grant & Epling (1943)=Z; Chambers & Hamer (1992)=Y; Harley et al. in Kadereit (2004).

FAMILY INDEX

FAMILY CODE: LAMIAC
FAMILY SCIENTIFIC: Lamiaceae
FAMILY AUTHORITY: Lindley 1836 or LABIATAE A.L. de Jussieu 1789
FAMILY COMMON: Mint Family
FAMILY SUMMARY: A family of about 230-250 genera and 6700-7170 species, herbs, shrubs, vines, and trees, cosmopolitan. The placement in the Lamiaceae of several genera traditionally placed in Verbenaceae (e.g. Clerodendrum) is strongly supported by several lines of evidence.
FAMILY REFERENCE: Harley et al. in Kadereit (2004).

NCBG DESCRIPTIVES

INTRO: Erect, rhizomatous perennial of bogs, wet meadows and moist to wet forests.
STEMS: Stems 4-angled, mostly unbranched, furry.
LEAVES: Leaves opposite, short-petiolate to sessile, oval to lance-shaped, 1 1/2-3 in. long, with entire margins or finely toothed, finely hairy beneath; all parts with a strong minty fragrance.
INFLORESCENCE:
FLOWERS: Flowers densely packed in flattened-round terminal and axillary clusters that sit on dusty-looking, leaflike bracts covered in white hairs; each flower white to pale pink and purple-spoted, about ¼ in. long, tubular opening 2 lips.
FRUITS:
COMMENTS: Flowers produce copious nectar, attracting a wide variety of butterflies and other insects.
HEIGHT: 1-3 ft.
DURATION: Perennial
HABIT: Herb
LEAF ARRANGEMENT: Opposite
LEAF COMPLEXITY: Simple
LEAF RETENTION:
FLORAL CHARACTERISTICS
SYMMETRY: Bilateral (Zygomorphic)
BLOOM TIME: June-Aug
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x x

BLOOM COLOR: White
White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable
x x x

FRUITING PERIOD: Sep-Oct.
DISTRIBUTION
HABITAT TYPE: Bogs/pocosins, Moist forests
NATIVE RANGE: eastern United States
HORTICULTURAL
Plant Sale Text: Short-toothed mountain-mint produces many tiny flowers of the palest pink color, atop its showy silvery bracts. The nectar and pollen of its flowers attract butterflies and many other beneficial pollinators. All parts of this plant have a strong minty fragrance and typically it is not eaten by deer. Old seed heads and stems may be left in place to provide winter interest. This perennial is vigorous and will spread over time. It is easily grown under most conditions. Cut back its stems as needed if you would like to encourage a more compact habit.

Bloom Table Text: Short-toothed mountain-mint produces many tiny flowers of the palest pink color, atop its showy silvery bracts. The nectar and pollen of its flowers attract butterflies and many other beneficial pollinators. All parts of this plant have a strong minty fragrance and typically it is not eaten by deer. Old seed heads and stems may be left in place to provide winter interest. This perennial is vigorous and will spread over time. It is easily grown under most conditions. Cut back its stems as needed if you would like to encourage a more compact habit.

NCBG Location: Education Center Landscape, Piedmont Habitat

Cultural Notes:

SOIL MOISTURE: Dry, Average, Moist/Wet
LIGHT EXPOSURE: Sun, Part Shade
MINIMUM HARDINESS ZONE: 4
MAXIMUM HARDINESS ZONE: 8
GERMINATION CODE:
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly
DEER RESISTANCE:

GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
14040 0 31 Wait 1899-11-30 View

USDA PLANTS DATABASE

USDA Symbol: PYMU
USDA Common Name: Clustered Mountainmint
Native Status: L48 (N)
Distribution: USA (AL, AR, CT, DC, DE, GA, IL, KY, LA, MA, MD, ME, MI, MO, MS, NC, NH, NJ, NY, OH, PA, RI, SC, TN, TX, VA, VT, WV)
Duration: Perennial
Growth Habit: Forb/herb

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FAC FAC UPL FAC FAC

This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast

WEAKLEY FLORA

SCIENTIFIC NAME: Pycnanthemum muticum var. muticum
COMMON NAME:
SYNONYMY: [< P. muticum - C, F, G, GW, K, Mo, Pa, RAB, Va, Y; < Koellia mutica (Michaux) Kuntze - S]
PHENOLOGY: Jun-Aug; Sep-Oct.
HABITAT: Bogs, wet meadows, moist to wet forests.
COMMENTS: NJ and MO south to FL and LA. A diploid, tetraploid, and hexaploid (?) species (n = 20, 40, ca. 54), under study by. D.B. Poindexter.
RANGE MAP: Pycnanthemum muticum var. muticum.png

Key to Map Symbols
ABOUT FAMILY (Weakley Flora)
Lamiaceae Lindley 1836 or LABIATAE A.L. de Jussieu 1789 (Mint Family)
SUMMARY: A family of about 230-250 genera and 6700-7170 species, herbs, shrubs, vines, and trees, cosmopolitan. The placement in the Lamiaceae of several genera traditionally placed in Verbenaceae (e.g. Clerodendrum) is strongly supported by several lines of evidence.
REFERENCE: Harley et al. in Kadereit (2004).
ABOUT GENUS (Weakley Flora)
Pycnanthemum Michx. (Mountainmint)
SUMMARY: A genus of 20-25 species, herbs, of temperate North America. Pycnanthemum remains a complicated and difficult group, with speciation apparently having proceeded by allopolyploidy, autoploidy, and aneuploidy. Numerous aberrant forms and (probably) sterile hybrids complicate identification and understanding.
REFERENCE: Chambers (1993); Grant & Epling (1943)=Z; Chambers & Hamer (1992)=Y; Harley et al. in Kadereit (2004).

HERBARIUM RESOURCES

SERNEC: Find Pycnanthemum muticum in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Pycnanthemum muticum in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Pycnanthemum muticum in USDA Plants
NPIN: Find Pycnanthemum muticum in NPIN Database
FNA: Find Pycnanthemum muticum in the Flora of North America (if available)
Google: Search Google for Pycnanthemum muticum

IMAGE USE RECORDS

ID IMAGE: 25655 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 25655 - Primary Image WOTAS
ID IMAGE2: 0 - Secondary Image WOTAS
ID IMAGE3: 25655 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)

From the Image Gallery


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Image ID: 30127
8 photo(s) available in the Image Gallery

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