with stem creeping below, branches erect, simple. Leaves broad, leaf sheath
tubular, persisting. Flowers sessile to subsessile, crowded in capitate or
globose fascicles or dense cymes perforating and emerging from base of leaf
sheath. Sepals and petals subequal. Fertile stamens 6, filaments bearded,
anthers ovoid. Carpels 3, ovary 3-celled. Fruit a 3-valved loculicidal capsule.
Seeds solitary or 2 in each cell.