[1] The plant grows in shady forest habitat on limestone substrates, usually near streams or rivers.

[3] This rockcress is a perennial herb with decumbent stems reaching 80 centimeters in length.

The stems spread out horizontally, and often droop over the side of any structure the plant may be growing on, such as a rock or cliffside.

The stems and leaves are gray-green in color due to a coating of whitish star-shaped hairs.

[3] Other authorities do not divide the species and suggest any physical differences are caused by the local environment.