Family: Oxalidaceae (Wood-sorrel family).
Native of South America.
Occurrence: Uncommon. Has been recorded for Taradale and Castlemaine.
This species, unlike Sour-sob, does not produce bulbils.
Similar species: The Large-flower Wood-sorrel has much larger leaves and flowers (to 4 cm wide), and the flowers are not in clusters.
Photos 1: R: Pink Wood-sorrel. The rhizome is woody at the base and is coved with old leaf bases. Farran Street, Castlemaine. 2: Pink Wood-sorrel. Beside Back Creek, Taradale. 3: Castlemaine Botanic Gardens.