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Perennial herb, 0.4-1.5 m high. Stems arising annual from a tuberous rootstock. Leaves petiolate; blade broadly ovate, 50-160 x 35-140 mm, apex acute, base abruptly cuneate, margins with coarse teeth often bearing small secondary teeth, lower surface dotted with minute, red to brownish, sessile glands, thin textured; petioles 20-100 mm long. Flowers: in sessile 3-flowered cymes, forming 6-flowered verticils 6-20 mm apart; bracts persistent beyond flowering stage; fruiting calyx enlarged but not gibbous at base, glandular-hispid; corolla 9-13 mm long, white with a flush of pink and a few spots on upper lip; Nov.-Apr.
Perennial herb, 0.4-1.5 m high; stems erect, arising annually from tuberous rootstock, pubescent. Leaves petiolate, broadly ovate, 50-160 x 35-140 mm, base cuneate, apex acute to abruptly acuminate, margins irregularly crenate-dentate; thinly pilose to fairly densely pubescent. Inflorescence: rachis 100-260 mm long; verticillasters 6-flowered. Flowers white flushed pink. Calyx 7-8 mm long when fruiting. Corolla: tube slightly deflexed, expanding and saccate at base, narrowing towards throat; upper lip 4-6 mm long, purple-spotted; lower lip boat-shaped. Flowering time Dec.-May.
