Patersonia

Patersonia (or Purple flag) is a genus of the Iridaceae with about 20 species in Australia and at least one in Timor.They are perennials with basal leaves growing from a woody rhizome that in some species extends above ground to form a short trunk. The leaves are tough and fibrous with various adaptations to conserve moisture: stomata sunk in grooves, thickened cross-section, marginal hairs or thickened margins.The flowers appear from between a pair of bracts on a leafless stem. They have three large outer tepals that are usually blue to violet, and three tiny inner tepals. There are three stamens fused at the base to form a tube around the longer style which bears a flattened stigma.
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