Stiff-leaved, sparsely-branched shrub, up to 3 m tall. Leaves ± uniform, basal leaves biternate with toothed leaflets, upper leaves needle-like, not grooved. Umbels racemously arranged, ± equal in size, fertile. Flowers yellow, petals with branched resin ducts. Fruit obovoid, rugose, mericarps isodiametric, vittae present, rib oil ducts inconspicuous.
Rigid, stiff-leaved, few-branched shrub, 1-3 m high, never glaucous. Leaves in axillary tufts, reduced, terete, pungent, invariably undivided, junciform (rush-like). Flowers in compound umbels on stout peduncles, yellowish. Flowering time Dec.-Apr. Fruit obovoid, ridged and warty, with a basal collar.
Rigid, stiff-leaved, few-branched shrub to 3 m. Leaves in axillary tufts, undivided, terete, pungent. Flowers in compound umbels on stout peduncles, yellowish. Fruit obovoid, warty, mericarps isodiametric, vittae present, rib oil ducts inconspicuous.