pycnocarpa Arabis pycnocarpa, the slender rock cress, is a species of flowering plant in the family Brassicaceae.

It is native to North America and eastern Asia, being found in rocky, calcareous areas.

[2] It is a small perennial or biennial that has white flowers in the spring.

Two varieties have been named that are distinguished by pubescence differences:[3]

This Brassicales article is a stub.