Native & Naturalized Plants of the Carolinas & Georgia


2109

Forb
Perennial

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Rare

Look for it in rich forests, over calcareous or mafic substrates, per Weakley's Flora

map
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LEAVES:
Simple
Opposite

FLOWER:
Summer/Fall
White/Cream with purplish streaks
Bisexual
Bilaterally symmetrical
2-lipped calyx
2-lipped 5-lobed corolla
2 long-exserted stamens (usually)
Superior ovary

FRUIT:
Summer/Fall
Schizocarp of mericarps

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales

WEAKLEY'S FLORA (11/30/12):
Collinsonia tuberosa   FAMILY Lamiaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Collinsonia tuberosa   FAMILY Lamiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 164-33-002:
Collinsonia tuberosa   FAMILY Lamiaceae

LESS THAN A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia canadensis

 

COMMON NAME:
Tuberous Horsebalm, Stoneroot


Click or hover over the thumbnails to see larger pictures.

image of Collinsonia tuberosa

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.


click here to see other plants that look similar to this COMPARE flowers of Horsebalm species

image of Collinsonia tuberosa

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.

image of Collinsonia tuberosa

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.

image of Collinsonia tuberosa

Richard and Teresa Ware    rtw_collinsonia_tuberosa2

September    Floyd County    GA

image of Collinsonia tuberosa

Richard and Teresa Ware    rtw_collinsoniatuberosa2b

September    Floyd County    GA