Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Cumberland Rosemary
Conradina verticillata
Family: Lamiaceae

Protection Status:
State Status:  E
USFWS Status: LT

Global Rank: G3
State Rank: S1

Cobble bars in large streams in full sun and along sandy riverbanks.

Species Description:
Shrub, evergreen.

Flowering Period: Early May to late June.

Additional Information at NatureServe

Diagnostic Characteristics:
Plant a low (< 5 dm tall), aromatic, perennial evergreen shrub, forming clumps or mats of sprawling branches which root at the nodes. Leaves needle-like, borne in fascicles, making them appear to be whorled; 1-2.5 cm long, with a strong rosemary-like scent.. Corolla tubular and 2-lipped, pinkish-lavender to purple, rarely white, having darker purple dots lining the throat of the corolla-tube; 2-2.5 cm long. Calyx tubular, notably ribbed, about 1 cm. with long hairs. Fruit are smooth, dark brown, tiny, nearly globe-shaped nutlets, four grouped together, nested in the base of the calyx. When in flower, the relatively large, 2-lipped flowers with dots on the corolla tube throat are unmistakable. Its foliage is distinctive at any time with its rosemary-like fragrance, its needle-shaped leaves with pale undersides, and its decumbent lower stem-branches rooting in the sand of its riverside habitat.

Disturbance of surrounding areas such as ATV trails, timber removal or any activity that results in increased erosion and weed invasion will be detrimental. 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 and should be controlled.

Global Range:

Known Kentucky Occurrences:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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