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Arabis lyrata L.
Lyrate Rockcress, Lyre-leaf Rockcress
Brassicaceae (Mustard Family)
Synonym(s): Arabidopsis lyrata, Arabis lyrata var. glabra
USDA Symbol: ARLY2
USDA Native Status: L48 (N), AK (N), CAN (N)
An erect stem rising from a rosette of basal leaves with a terminal cluster of small, white or greenish-white flowers.
Other common members of this genus are Hairy Rockcress (A. hirsuta), with a basal rosette of hairy, oblong leaves, clasping stem leaves, and pods that are erect or pressed against the stem; and Smooth Rockcress (A. laevigata), with smooth, lanceolate, clasping leaves and down-curved or horizontal pods.
From the Image Gallery
Plant CharacteristicsDuration: Biennial
Fruit Type: Silique
Size Notes: Up to about 20 inches tall.
Bloom InformationBloom Color: White
Bloom Time: Apr , May , Jun , Jul
DistributionUSA: AK , CT , DC , DE , GA , IA , IL , IN , KY , MA , MD , MI , MN , MO , MS , NC , NJ , NY , OH , PA , TN , VA , VT , WI , WV
Canada: AB , ON , SK
Native Distribution: Alberta east to Quebec, south to North Carolina, west through Tennessee to Missouri, and north to Minnesota.
Native Habitat: Cliffs, ledges, and in gravelly or sandy soil.
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Natural Biodiversity - Johnstown, PA
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Arabis lyrata in USDA Plants
FNA: Find Arabis lyrata in the Flora of North America (if available)
Google: Search Google for Arabis lyrata
MetadataRecord Modified: 2023-03-09
Research By: TWC Staff