Fls hermaphrodite, terminal on short lateral branches; two outer members variously interpreted as sepals or prophylls enclosing petaloid per. of 5 imbricate members; stamens 5, hypog., alternating with per. segs; filaments long and adnate to per. at base, anthers dorsifixed and extrorse; ovary unilocular, ovoid, narrowed into erect style with 2 triangular stigma lobes alternating with prophylls; ovules 4-5, on slender funicles, embryo curved. Fr. capsular but ind. Densely tufted glab. perennial cushion plants with entire lvs imbricated all round stem. Monotypic genus confined to N.Z.
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