Plants clump-forming perennials, woody at the base. Stems erect-ascending, 30-60 cm tall sometimes purplish, lower portion villous with most hairs eglandular but a few glandular, upper portion with numerous short antrorse eglandular hairs, few or no capitate glandular hairs and a few sessile oil globules; leaves pinnate, with 2-3 pairs of lateral segments [to be completed]