Trachymene ornata, or spongefruit, is a slender annual herb in the family Araliaceae.

[5][4][6] Trachymene ornata is an annual herb growing up to 15 centimetres (6 in) high,[5][4] which has sparsely hairy stems.

[5] The inflorescence is an umbel of 3-6 flowers[6] which are bisexual, white or blue, and observed (in NSW) from July to October.

[5] The two-carpelled fruits split into two densely woolly mericarps with white (sometimes purplish) hairs.

[6] It grows in rocky places, and in shallow soils[5][4] Trachymene ornata was first described by Stephan Endlicher in 1839,[7][8] and redescribed by Druce in 1917 as belonging to the genus, Trachymene Rudge.