KNP Rare Plants Database


 
KY Office of Kentucky Nature Preserves




Kidney-leaf Twayblade
Listera smallii
Family: Orchidaceae

Protection Status:
State Status:  T
USFWS Status: 

Global Rank: G4
State Rank: S2

   

Photo from KSNPC Files
Habitat:
Humus of damp woods and thickets, bogs or shaded, weed-free humus below rhododendron on mountain slopes and stream heads.

Species Description:
A small, delicate herb with one pair of opposite leaves and a teminal raceme of up to 15 brownish green flowers.

Phenology:
Flowering Period: Early June to mid August.

Additional Information at NatureServe

Diagnostic Characteristics:
Lip not cleft to the middle, lip narrowed to the base, column conspicuous. Pedicels glabrous, lateral teeth conspicuously projecting.

Management:
Timber removal would be detrimental.

Global Range:
Appalachian endemic, Pennsylvania to N. Carolina/Tennessee. Considered rare in Maryland (B1), West Virginia (B3), Kentucky, Tennessee. Tennessee: about six occurrences recently extant.

Known Kentucky Occurrences:
Species occurrence map

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Data Last Updated: November 2018
Office of Kentucky Nature Preserves
300 Sower Blvd
Frankfort,KY 40601
Phone: (502) 573-2886
Email:
naturepreserves@ky.gov
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