Umtanum Desert Parsley

General: Acaulescent, tap-rooted perennials, 15-30 cm. tall, with a prominent false scape clothed by 2-5 scarious sheaths; roots irregularly tuberous, up to 5 cm. long and 2 cm. wide below, elongate and slender above, the surface brown.
Leaves: Leaves quinately compound and bipinnately dissected; petioles 2-6 cm. long, sheathing throughout, purplish tinged, the margins scarious; blades ovate in outline, 5-12 cm. long and 2.5-6 cm. wide, glabrous; ultimate leaf segments numerous, filiform, 1-3.. more