Hydrocotyle tripartita—Three-part Pennywort—ARALIACEAE

Hydrocotyle tripartita

Link to Images on Flickr.

Habitat—Grows in damp places in forest along watercourses; widespread, from coastal districts inland to Armidale area, Warrabah National Park and the A.C.T.

Distribution— Tasmania, Victoria, New South Wales, Queensland and South Australia.

Description— Small slender perennial herb, stems procumbent, creeping and rooting at least at the lower nodes, usually 2 to 10 cm high, occasionally mat—forming; glabrous or hairy.

Local occurrences

Australis Resort, Barrington/Gloucester Tops, Black Head Flora Park, Darawank Nature Reserve and Wetland, Diamond Beach, Knappinghat Nature Reserve, Queen Elizabeth Park Taree, Stephen Street Reserve, Waitui Falls and Wingham Brush.

Leaves.— Circular to reniform in outline, 4 to 20 mm diam., divided to base or nearly so into 3 to 5 segments; segments obovate, to c. 10 mm long, apex cuneate, often lobed or deeply divided again apically, often toothed; lamina strigose, hairs more dense on lower surface; petiole to c. 5 cm long with long reflexed hairs especially towards the apex; stipules membranous, entire.

Hydrocotyle tripartita
Hydrocotyle tripartita

Inflorescence.—Umbels small, head—like, 3 to 6—flowered, ± sessile; peduncle filiform, leaf-opposed, shorter than the petiole. Petals greenish, yellowish or purplish

Flowering.—Throughout the year, mainly November to March.

Fruit.—C. 1 mm long, c. 2 mm wide, compressed laterally; mericarps with acute dorsal and intermediate ribs and inconspicuous lateral ribs.

Ripe.—Throughout the year.