ACANTHOMINTHA (from acanthos, a spine, in allusion to the spiny-toothed bracts, and Mentha, Mint, as the plant was formerly included under Calamintha). ORD. Labiatae. A monotypic genus. The species is a small, glabrous, half-hardy annual, requiring ordinary cultivation. ACANTHOMINTHA ilicifolia (Holly-leaved). fl. three to eight in a whorl in all the upper axils; whorls subtended by opposite bracts, which are larger than the leaves and spiny-toothed; calyx tubular, bilabiate; corolla 1/2in. long, the upper lip white, small, the lower one purple, with a yellow throat, four-lobed. July. l. petiolate, 1/2in. to 1in. long, rounded or ovate, with a cuneate base, coarsely and bluntly toothed. Branches ascending, 6in. to 8in. long. California, 1883. (B. M. 6750.)