Leaves opposite, small, oil glands especially visible on the lower surface.
Inflorescences usually of solitary flowers or pairs of flowers in the leaf axils. Flowers 5- or rarely 6-merous, white or pink. Sepals and petals 6, similar to each other, petaloid, ± circular. Stamens equal to the number of sepals and opposite them or up to twice as many or rarely 15–30. Ovary 1-locular, placenta basal or lateral, ovules 2, or 2 plus 2 and superposed.
Fruit an indehiscent nut; seed usually solitary.
Distribution and occurrence: World: c. 32 species, endemic Australia. Australia: all States.
Text by Peter G. Wilson
|One species in NSW: Thryptomene hexandra|