Comprehensive DescriptionRead full entry
DescriptionErect sparsely branched herb, up to c. 1 m tall. Stems ribbed hairy. Leaves opposite, elliptic-oblong to ovate, up to c. 11 cm, hairy on both surfaces; margin crenate-serrate except near the base. Calyx deflexed, swollen at the base, 8?-toothed. Flowers in 1-4 spaced, subterminal many flowered spherical heads. Corolla up to 7 mm long, 2-lipped; upper lip transparent; lower lip white, notched. Anthers orange.