KNP Rare Plants Database

KY Office of Kentucky Nature Preserves

Kentucky Gladecress
Leavenworthia exigua var. laciniata
Family: Brassicaceae

Protection Status:
State Status:  E
USFWS Status: 

Global Rank: G4T1T2
State Rank: S1S2


Photo by KSNPC Staff
In full sun on flat-bedded outcrops of silurian limestone or dolomite in shallow soils of glades, rock oucrops, pastures and lawns.

Species Description:
Long-persistent annual herb.

Flowering Period: Early March to late April.

Additional Information at NatureServe

Diagnostic Characteristics:
This species of glade cress differs in having a white to lavender flowerswith petlas that are shallowly emarginate (having a notch) and less than 10 mm in length. the sepals are 3.5-5 mm (generally smaller than L. stylosa). The fruit are flattened. The terminal leaf lobe is notably larger than the lateral lobes.

Exotic pest plants are a threat to this species and should be removed. Avoid creating access to the site through trail or road construction. Timber removal may be beneficial and even needed to maintain the open character of the habitat for this species. Hand removal of trees in the vicinity of the population is necessary to avoid impacts from timber operations.

Global Range:
Kentucky: Bullitt and Jefferson counties

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
Copyright © 2003-2011 Commonwealth of Kentucky. All rights reserved.