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Oxylobium (family Leguminosae, subfamily Papilionatae) A genus of small, xerophytic (see XEROPHYTE) shrubs in which the leaves are pinnate or simple, usually alternate, and stipulate. The flowers are irregular, coloured red or yellow, and held in terminal or axillary racemes. The calyx lobes overlap; often the upper 2 are broader. The petals are often clawed at the base, with a heel and wings all of the same length. There are 10 free stamens. There are 24 species, all endemic (see ENDEMISM) to Australia and found throughout the continent in dry scrub and heathland.