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.New England Wildflower Society
Description 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:Flora of North America Arabis pycnocarpa var. adpressipilis – native only to eastern North America Arabis pycnocarpa var. pycnocarpa – widespread across North America and Asia
See also
List of Arabis species
References