OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Collinsonia verticillata   FAMILY Lamiaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Collinsonia verticillata   FAMILY Lamiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-33-003:

Collinsonia verticillata   FAMILY Lamiaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Micheliella verticillata

 

COMMON NAME:
Whorled Horsebalm


         To see larger pictures, click or hover over the thumbnails.

image of Collinsonia verticillata, Whorled Horsebalm

Gill Newberry    gn04_c_verticillata

April        

The inflorescence is usually unbranched, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Collinsonia verticillata, Whorled Horsebalm

Jim Fanning    jcf_horsebalms1

April    Pickens County    SC

SC Botanical Garden

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm0404v_27b

April    Pickens County    SC

SC Botanical Garden

The middle lobe of the corolla's lower lip is long and lacerated, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm120414_889

April    Pickens County    SC

Jocassee Gorges

The two pairs of opposite leaves, appearing whorled, are distinctive, per Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001).

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm120414_890

April    Pickens County    SC

Jocassee Gorges

Thyrse narrow, rachis densely pilose with gland-tipped trichomes, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm120414_952

April    Pickens County    SC

Jocassee Gorges

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm220419_7001

April    Pickens County    SC

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm220419_7003

April    Pickens County    SC

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm220419_7013

April    Pickens County    SC

image of Collinsonia verticillata, Whorled Horsebalm

Richard and Teresa Ware    rtw_c_verticillata_12

April        

image of Collinsonia verticillata, Whorled Horsebalm

Richard and Teresa Ware    rtw_c_verticillata_2

April        

image of Collinsonia verticillata, Whorled Horsebalm

Sam Pratt    sbp_20140428_122446

April    Spartanburg County    SC

In cultivation

image of Collinsonia verticillata, Whorled Horsebalm

Sam Pratt    sbp_20140428_122703

April    Spartanburg County    SC

In cultivation

A 2-cleft long-exserted stigma and 4 long-exserted stamens, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).


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

image of Collinsonia verticillata, Whorled Horsebalm

Sam Pratt    sbp_20140428_122703b

April    Spartanburg County    SC

In cultivation

Calyx zygomorphic, 2-lipped and 5-toothed, 3-6mm long at anthesis, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Collinsonia verticillata, Whorled Horsebalm

Keith Bradley    kab_c_verticillata_6526

May    Polk County    NC

image of Collinsonia verticillata, Whorled Horsebalm

Keith Bradley    kab_c_verticillata_6550

May    Polk County    NC

image of Collinsonia verticillata, Whorled Horsebalm

JK Marlow    jkm170923_0566_2

September    Pickens County    SC

Jocassee Gorges

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Collinsonia verticillata   FAMILY Lamiaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Collinsonia verticillata   FAMILY Lamiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 164-33-003:
Collinsonia verticillata   FAMILY Lamiaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Micheliella verticillata

 

Find by SCIENTIFIC NAME:

353

Forb
Perennial

Habitat: Rich forests, ranging from moist (cove) forests to rather dry oak forests over mafic or calcareous rocks, per Weakley's Flora

Native to the Carolinas & Georgia

Uncommon in GA Mountains (rare elsewhere in GA-NC-SC)

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Opposite appearing whorled

FLOWER:
Spring/Summer
Lavender/Purplish
Bilaterally symmetrical
2-lipped calyx
2-lipped 5-lobed corolla
4 long-exserted stamens
Superior ovary
Bisexual

FRUIT:
Summer
Schizocarp of mericarps

 

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



 


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