KNP Rare Plants Database


 
KY Office of Kentucky Nature Preserves




Whorled Horse-balm
Collinsonia verticillata
Family: Lamiaceae

Protection Status:
State Status:  E
USFWS Status: 

Global Rank: G3
State Rank: S1?

   

Photo by Dennis D. Horn @ TENN
Habitat:
Rich forests, ranging from moist forests to rather dry oak forests (Weakley 1998).

Species Description:
Perennial herb.

Phenology:
Flowering Period: Mid April to mid June.
Fruiting Period: Early June to late July.

Additional Information at NatureServe

Diagnostic Characteristics:
Herbaceous mint with lemon-scented foliage and with 2-3 pairs of ovate-oblong (to 20 cm) leaves. The yellow flowers are in a single terminal panicle. They are bilabiate (two-lipped) and the lower lip is fringed; four stamens present.

Management:
Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or impacts due to erosion. Exotic pest plants are a threat to this species. Avoid creating access to the site through trail or road construction.

Global Range:
Southern Virginia, Tennessee, North Carolina, South Carolina, and Georgia, with disjunct populations in Ohio. Scattered and rare throughout range.

Known Kentucky Occurrences:
Species occurrence map

Note: To print pages from this site change Page Setup to Landscape
Data Last Updated: November 2018
Office of Kentucky Nature Preserves
300 Sower Blvd
Frankfort,KY 40601
Phone: (502) 573-2886
Email:
naturepreserves@ky.gov
Copyright © 2003-2011 Commonwealth of Kentucky. All rights reserved.