Plant Index


 
 
 
 

Pycnanthemum verticillatum

Pycnanthemum verticillatum (Michx.) Pers.

whorled mountain-mint

Pycnanthemum verticillatum (Whorled Mountain-mint)
Image ID: 8026
Image by: Parkins, Grant Morrow
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: PYVE
SCIENTIFIC NAME: Pycnanthemum verticillatum
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2018-09-18

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:
STEMS:
LEAVES:
INFLORESCENCE:
FLOWERS:
FRUITS:
COMMENTS:
HEIGHT: 1-3 ft.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
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

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

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE: eastern North America

HORTICULTURAL
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.

Bloom Table Text:

NCBG Location:

Cultural Notes:

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

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
359 2011-0231 2011-11-04 363 View
9437 2021-0069 2021-07-01 363 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
363 HORT 2010-12-15 Poythress View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
875 359 23 NCBG staff 2011-11-03 View
12772 9437 23 Liloia 0000-00-00 View

USDA PLANTS DATABASE

USDA Symbol: PYVE
USDA Common Name: Whorled Mountainmint
Native Status: L48 (N), CAN (N)
Distribution: USA (AR, CT, DE, GA, IA, IL, IN, KS, KY, MA, MD, ME, MI, MO, MS, NC, NE, NJ, NY, OH, OK, PA, RI, SC, TN, VA, VT, WV), CAN (ON, QC)
Duration: Perennial
Growth Habit: Forb/herb

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FAC FAC FACW 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 torreyi
COMMON NAME: Torrey's Mountain-mint
SYNONYMY: [= C, G, Mo, Va, Y, Z; < P. verticillatum - RAB; = P. torrei - K, Pa, orthographic variant; > P. torrei var. torrei - F; > P. torrei var. leptodon (Gray) Boomhour - F; = Koellia leptodon (Gray) Small - S]
PHENOLOGY: Jun-Oct.
HABITAT: Dry rocky woodlands, over mafic, ultramafic, or calcareous rocks, dry powerline rights-of-way.
COMMENTS: NH west to IL, south to NC (and SC?). A tetraploid and hexaploid species (n = 40 and ca. 60). The epithet spelling ‘torrei’ is a correctable error.
RANGE MAP: Pycnanthemum torreyi.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 verticillatum in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Pycnanthemum verticillatum in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 8026
ID IMAGE2: 8026
ID IMAGE3: 25804

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