Plant: Perennial forb to 40 cm; herbage with strong odor, conspicuously gland-dotted Leaves: Perennial forb to 40 cm; herbage with strong odor, conspicuously gland-dotted; leaves alternate, compound, leaflets ovate, pubescent, gland-dotted Flowers: inflorescence a spike 4-8 cm long and 20 mm wide; flowers purple, calyx lobes ending in awn 5 mm long, covered in soft hairs.