Mint Leaved Leucas is a densely hairy shrubby herb, 2.5-3 m tall. Leaves are ovate-heartshaped, rufous hairy above, velvety or hairy below. Leaf margins are serrate-crenate, apex acute, nerves impressed; stalk 1-3 cm long; bracts linear-lanceolate, equalling the calyx. Calyx 1-1.2 cm long; tube bell-shaped, straight, throat hairy; sepals 2.5-3 mm long, unequal, erect. Flower tube to 8 mm long, annular; upper lip to 5 mm long with white hairs; lower to 8 mm long, 3-lobed; mid-lobe larger, emarginate. Stamens 4; lower filaments longer; anthers 2-celled. Ovary 4-partite; style ca. 1.8 cm long; stigma 2-lobed. Flowering: January.