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A monotypic genus endemic to a few localities in the South Island of New Zealand. It may be distinguished from Carmichaelia by the combination of a many-flowered racemose inflorescence and a single-seeded indehiscent pod. In Carmichaelia some species have a similar inflorescence but in these the pod is dehiscent. In Nothospartium, another ally, the pod is many-seeded and jointed.