| General Information |
| Distribution | Native from Australia to Malesia and Polynesia.
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Habit
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Erect or ascending perennial herbs from a fleshy tuberous base, sometimes woody at base; stems and branches somewhat fleshy, 1-5(-10) dm long, densely villous.
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Leaves
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Leaves green, thick or sometimes thin, chartaceous, ovate to suborbicular or broadly deltate, 1.5-3(-9) cm long, 0.5-2(-3.8) cm wide, both surfaces villous-tomentose, upper surface with small oil globules, lower surface glandular punctate, the glands reddish, margins coarsely crenate or crenate-dentate, apex rounded to sometimes acute, base broadly cuneate to truncate or sometimes subcordate, petioles 0.5-1(-3.5) cm long, villous.
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Flowers
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Flowers 6-12 in dense verticillasters, these arranged in terminal, racemose inflorescences 5-30 cm long, these simple or sometimes branched at base, bracts cordate, caducous; calyx 1.2-2.5 mm long, enlarging to 3-5 mm long in fruit, densely short-villous and glandular punctate, the glands reddish, upper lip entire, broadly ovate, becoming recurved in fruit, the surface somewhat reticulate, lower lip 4-toothed, the teeth subequal, lateral ones slightly shorter and wider than median ones, all teeth sharply pointed; corolla pale blue, 3.5-5.5 mm long, puberulent and glandular punctate, lower lip boat-shaped, longer than upper lip; stamens exserted beyond corolla tube.
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Fruit
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Nutlets brown, ovoid to lenticular, ca. 0.8 mm long.
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Chromosomes
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2n = 34
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