Isomeris
(from isos, equal, and meris, part; the petals, stamens, and pistils are of equal length). ORD. Capparideae. A monotypic genus. The species is a half-hardy deciduous shrub, having a disagreeable odour, a long tap root, and a very spreading head. It thrives best in a compost of sandy loam and leaf mould. Propagated in autumn, by cuttings of ripe shoots. I. arborea (tree-like). fl. yellow, large, in terminal racemes; petals four, equal, sessile. May. l. trifoliolate, lanceolate, mucronulate, glabrous. Stem thick, very knotty. h. 10ft. California, 1839. (B. M. 3842.)