Fls hermaphrodite, solitary. Sepals 4-5 free; petals 0; stamens as many as sepals and alternating with them; ovary 1-celled, styles as many as sepals, free to base; capsule opening by as many teeth as there are sepals; seeds ∞.Small, densely lfy, glab. herbs, lvs narrow, opp., connate at base, exstipulate. Mostly with strong tap root. A southern genus of more than 20 spp. known from Australia, Tasmania, Kerguelen Is, S. America, Falkland Is, S. Georgia, and extending to Antarctica. Of the 13 N.Z. spp. all but 2 are endemic.