Coleus

Annual or perennial herbs or shrubs, sometimes succulent, sometimes with a fleshy or tuberous rootstock. Leaves opposite, sometimes whorled. Inflorescence raceme-like, strongly condensed to lax, with 1-several flowers in cymes, sessile or pedunculate at nodes; bracts subtending cymes usually caducous. Calyx funnel-shaped to tubular, straight or curved, often ventrally gibbous, with pedicel attached eccentrically at calyx base opposite the posterior lip, 2 lipped (sometimes appearing regularly 5-lobed), posterior (dorsal) lip 1-lobed, larger or similar size to other lobes, anterior (ventral) lip 4-lobed. Corolla 2-lipped with posterior lip shorter than anterior, rarely subequal; tube sigmoid to only slightly deflexed, narrow and parallel-sided at base, expanding towards throat; posterior lip 4-lobed, erect or ascending; anterior lip horizontal, distinctly cupped to slightly concave; stamens 4; filaments fused together or free, held within the anterior lip or exserted; style bifid, rarely entire. Nutlets ovoid, often dorso-ventrally flattened.