Flora of New Zealand Series

Polygamodioec. herb. Umbels terminal and axillary, compound; bracts foliaceous, bractlets smaller. Fls jointed on top of pedicels. Hypanthium with 2-4 grooves; calyx obsolescent; petals 5, stamens 5, disk annular; ovary 4-3-loculed; style-branches 4-3, stylopodia ill-developed; fr. subglobose, hollowed at apex; seeds 1 per locule, ovoid. Large herb with stout rhizomes; lvs large, on fistular petioles. Endemic to Subantarctic Is.