Swainsona colutoides, commonly known as bladder senna or bladder vetch, is a species of flowering plant in the family Fabaceae and is endemic to arid areas of Australia. It is an erect annual, shrub-like herb, with imparipinnate leaves usually with up to 13 to 17 egg-shaped leaflets with the narrower end towards the base, and racemes of 10 to 20 purple flowers.

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