Miniature glabrous annuals. Leaves sessile or petiolate, spathulate or orbiculate, entire or 3-lobed. Flowers small, white, violet, lilac, or flesh-coloured, on long peduncles. Sepals spreading, equal at the base. Stamens free. Pouch broadly oblong, laterally compressed, with 2 or 3 seeds in each cell. Only two species are known.

1. I. acaule. - An exceedingly pretty little plant, not more than 3 inches high. Flowers lilac, or white tinged with violet. Native of Portugal.