spreading rockcress

General:
Biennial or short-lived perennial from a simple or branched crown, with 1-several simple or upwardly branching, erect stems 2.5-8 dm. tall, pubescent at the base with appressed, 3-forked hairs and some simple hairs; generally glabrous above.
Leaves:
Leaves numerous, with a basal rosette of narrowly oblanceolate leaves 3-6 cm. long and 3-8 mm. wide, acute, narrowed to a slender petiole; cauline leaves alternate, strongly overlapping, sessile and auriculate, the upper glabrous,.. more