Isotoma axillaris is widespread from Victoria up through New South Wales and in to southern Queensland, growing in damp crevices or shallow soil in rocky areas. The milky sap of this plant can cause severe irritation to skin and temporary blindness if contact is made with the eyes. Flowering October spring time right through to May.
Growing to 5 cm in height. Flower diameter 20 mm.
''Isotoma axillaris'', commonly known as rock isotome or showy isotome, is a small herbaceous perennial in the family Campanulaceae. It usually has blue or mauve star-shaped flowers from September to May. It may also be called blue star, star flower, or laurentia.