Ser. Platyrhynchae Maximowicz.

Herbs drying black. Stems erect, rigid, usually branched apically. Leaves in whorls of 3 or 4, lanceolate to linear or oblong, pinnatifid to pinnatisect. Inflorescences racemose or spicate. Calyx lobes 5, triangular or lanceolate, entire. Corolla tube 2--3 X as long as calyx; galea beakless, with 1 marginal tooth on each side; beak short.