LAMIACEAE  

Perennial herbs or subshrubs, much branched; stems and branches acutely quadrangular. Leaves shortly petiolate to subsessile, ovate to oblong-ovate, acute, rounded at base, dentate to crenulate. Inflorescences ample, dichotomously branched, axillary and terminal panicles; bracts not sharply differentiated from leaves; bracteoles linear, very small. Calyx urceolate-campanulate, sometimes obscurely separated into a 3-toothed upper lip and a 2-toothed lower lip; teeth subequal, triangular. Corolla 2-lipped; tube relatively straight, not markedly ventricose or saccate at base; upper lip reflexed, 4-fid at apex, lower lip broadly ovate, almost flat. Stamens 4, declinate; posterior one arising near base; anterior one arising at mouth of corolla tube, exserted; filaments all free to base; anthers synthecate, ovate. Style far exserted; stigma minutely 2-lobed.

Perennial herbs with a woody rootstock or subshrubs, glandular pubescent; stem erect to ascending, quadrangular at least in younger parts. Leaves opposite or 3- or 4-nate, sessile or shortly petiolate. Inflorescences simple, terminal or axillary racemes with flowers arranged in 2-4-flowered verticils; flowers pedicellate. Calyx 2-lipped, shortly tubular, small and semi-erect during flowering, accrescent and declinate in fruit; upper lip broad, ovate, shortly decurrent, lower lip 2- or 4-lobed, lobes deltoid to subulate. Corolla 2-lipped; tube straight, not or only slightly exserted from calyx tube; upper lip 4-lobed, lower lip horizontal or deflexed, slightly concave, +/- as long as upper one; bracts subtending a single flower. Stamens 4, declinate, but posterior 2 sterile, arising near midpoint of corolla; anterior 2 fertile, arising near corolla throat; filaments free; anthers dorsifixed, synthecate, held within basal part of corolla lip. Ovary 4-lobed; style curved, 2-lobed at apex. Nutlets basifixed, surrounded by a 4-lobed disc.

Perennial herbs or subshrubs; stems quadrangular to subterete. Leaves petiolate, thin, crenate. Inflorescences of small flowers in dense, terminal or lateral spike-like panicles; bracts ovate, sessile, membranous, ciliate, much smaller than leaves, persistent. Calyx: tube subcylindric to funnel-shaped, 10-nerved; teeth 5, subequal, herbaceous, not rigid. Corolla: tube funnel-shaped to cylindric; limb bilabiate, upper lip short, curved, lower lip longer, deflexed, 3-lobed. Stamens 4, didynamous, curved, lowest pair the longest; anther thecae distinct or confluent. Style bifid at apex. Nutlets obovoid, reticulate, scaly at apex.