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Completely glabrous annual, with ascending or erect stems ± leafy, up to 0.4 m high. Leaves spathulate and cuneate, 5-20 x 3-8 mm, mostly dentate towards tip, obtuse or acute; petioles absent to short. Flowers solitary in leaf axils, arranged in racemes; pedicels 7-12 mm long. Calyx: tube broadly turbinate or almost hemispherical; lobes triangular, fairly acute, entire, 2 mm long. Corolla 8 mm long; tube pale, limb blue, base with yellowish spots; upper lobes narrowly lanceolate, lower lobes oblong. Flowering time Sept.-Dec.
Quite glabrous; stems prostrate or ascending, weak, angular; leaves dentate, lower ones sub-orbicular or obovate, obtuse, petiolate; upper ones subsessile, narrowed at the base, oblong, acute or sublanceolate; flowers loosely racemose; pedicels filiform, 2-3 times longer than the lanceolate-cuneate 2-4-toothed bractea; calyx-tube shortly obconical, about as long as the ovate, acute lobes; corolla 2-3 times longer than the calycine lobes; anthers hairy on the back, the 2 lower bearded.
Sprawling or erect perennial herb, 40-300 mm tall. Leaves sessile to shortly petiolate, spathulate to cuneate, shallowly toothed above. Flowers 1 per axil of upper leaves, pedicellate, corolla ± 8 mm long, bright to pale blue with white tube, rarely pure white. Fruit glabrous.
Erect or ascending herb, up to 150 mm tall. Flowers in terminal racemes. Stem glabrous. Lower leaves toothed, petioled, obovate, upper leaves lanceolate. Calyx tube as long as ovate, acute lobes. Flowers blue.
