Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/10/25):
Pycnanthemum incanum +
FAMILY
Lamiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Hoary Mountain-mint at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Pycnanthemum incanum
FAMILY
Lamiaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Pycnanthemum incanum +
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-28-008:
Pycnanthemum incanum FAMILY Lamiaceae
COMMON NAME:
Hoary Mountain-mint, White Mountain-mint
To see larger pictures, click or hover over the thumbnails.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_koin_001_lvd
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JK Marlow jkm230331_2261
March Spartanburg County SC
)
JK Marlow jkm230331_2262
March Spartanburg County SC
)
JK Marlow jkm0404g_09
April Haywood County NC
Corneille Bryan Native Garden
Pubescence variable thoughout the species, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Gill Newberry gn07_p_incanum_flowers
July
)
Gill Newberry gn07_p_incanum_inf
July
)
Gill Newberry gn07_p_incanum_plant
July
)
JK Marlow jkm0307m_36
July Oconee County SC
Sumter National Forest: Andrew Pickens Ranger District
Upper portions of this plant appear white-powdery from a fine pubesence, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm0507m_02
July Oconee County SC
Leaves ovate to elliptic to lanceolate, tips acute, margins shallow serrate, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
)
JK Marlow jkm0507m_07
July Oconee County SC
Leaves increasingly dense whitish hairy towards flowers, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
)
JK Marlow jkm0507m_10
July Oconee County SC
)
JK Marlow jkm0507m_10b
July Oconee County SC
Corolla spotted with purple, stamens extended - A very showy flower, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
)
Bobbie L Holt blh1172_a
August Anderson County SC
Carolina Wild Native Plant Nursery
Flowers clustered at terminals with whitish floral leaves and bracts, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
)
JK Marlow jkm140817_824
August Spartanburg County SC
)
JK Marlow jkm140817_827
August Spartanburg County SC
)
JK Marlow jkm170826_783
August Spartanburg County SC
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/10/25):
Pycnanthemum incanum +
FAMILY
Lamiaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Pycnanthemum incanum
FAMILY
Lamiaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Pycnanthemum incanum +
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-28-008:
Pycnanthemum incanum
FAMILY
Lamiaceae
1172
Forb
Perennial
Look for it in forests and woodland borders, per Weakley's Flora
Native to the Carolinas & Georgia
Common, uncommon, rare, or absent - depending on variety & region
LEAVES:
Simple
Opposite
FLOWER:
Summer
White to lavender
spotted with purple
Bilaterally symmetrical
5-toothed calyx
2-lipped 4-lobed corolla
4 stamens, usually exserted
Superior ovary
Bisexual
FRUIT:
Summer/Fall
Schizocarp of mericarps
TO LEARN MORE about this plant, look it up in a good book!
- All About South Carolina Wildflowers (Midgley, 1999) p233
- Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005) p152
- Gardening with Native Plants of the South (Wasowski & Wasowski, 1994, 2020) p163
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p163
- Newcomb's Wildflower Guide (Newcomb, 1977) p084
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p083
- Wild Flowers of NC, 2nd edition (Justice, Bell, & Lindsey, 2005) p220
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p240
- Wildflowers of Tennessee (Carman, 2005) p225
- Wildflowers of the Southern Mountains (Smith, 1998) p141
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