Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Collinsonia tuberosa
FAMILY
Lamiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Tuberous Horsebalm at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Collinsonia tuberosa
FAMILY
Lamiaceae
INCLUDED WITHIN A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia canadensis
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-33-002:
Collinsonia tuberosa FAMILY Lamiaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Collinsonia tuberosa
COMMON NAME:
Tuberous Horsebalm, Stoneroot, Deepwoods Horsebalm
To see larger pictures, click or hover over the thumbnails.
)
John B. Nelson jbn_1458134092_91bbf70d48
September Berkeley County SC
Francis Biedler Forest
Flowers pale yellow to cream with thin purple streaks; lower lip fringed, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
COMPARE
flowers of Horsebalm species
)
Richard and Teresa Ware rtw_c_tuberosa_2
September
The middle lobe of the corolla's lower lip is long and lacerated, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Richard and Teresa Ware rtw_collinsonia_tuberosa
September
A 2-cleft long-exserted stigma and (usually) 2 long-exserted stamens, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Richard and Teresa Ware rtw_collinsonia_tuberosa2
September Floyd County GA
)
Richard and Teresa Ware rtw_collinsoniatuberosa2b
September Floyd County GA
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Collinsonia tuberosa
FAMILY
Lamiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Collinsonia tuberosa
FAMILY
Lamiaceae
INCLUDED WITHIN
A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia canadensis
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-33-002:
Collinsonia tuberosa
FAMILY
Lamiaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Collinsonia tuberosa
2109
Forb
Perennial
Habitat: Rich forests, over calcareous or mafic substrates, per Weakley's Flora
Native to the Carolinas & Georgia
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite
FLOWER:
Summer/Fall
White/Cream with purplish streaks
Bilaterally symmetrical
2-lipped calyx
2-lipped 5-lobed corolla
2 long-exserted stamens (usually)
Superior ovary
Bisexual
FRUIT:
Summer/Fall
Schizocarp of mericarps
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p433
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p133
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p084
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p231
- Wildflowers of Tennessee (Carman, 2005) p218
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p259
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