Sida corrugata commonly known as corrugate sida,[2] is a flowering plant in the family Malvaceae. It is a spreading perennial with yellow flowers, hairy leaves and grows on all mainland states of Australia with the exception of Western Australia and the Northern Territory.
Sida corrugata is a decumbent or prostrate perennial, spreading to 30cm (12in) in diameter, smooth or with a dense covering of matted hairs. Leaves are arranged alternately, hairy, narrowly ovate or linear 5–50mm (0.20–1.97in) long, 2–10mm (0.079–0.394in) wide, rounded at the base or almost heart-shaped, grayish green to dark green on upper surface, paler underneath and finely toothed along the margin on a petiole1.3–2.3mm (0.051–0.091in) long. Flowers have five yellow petals 5–6mm (0.20–0.24in) long, calyx lobes 1.5–2.5mm (0.059–0.098in) long, triangular-shaped ending in point at the apex. Flowering may occur at any time of the year and the fruit is a deeply corrugated globe-shaped mericarp, 5mm (0.20in) in diameter and densely covered in short, soft hairs.[2][3][4]
Corrugate sida grows in a variety of situations including clay, fertile loams and sandy soils in grassland and woodlands in New South Wales, Queensland, Victoria, South Australia and the Northern Territory.[3][4][7]
1 2 Kutsche, Frank; Lay, Brendan; Croft, Tim; Kellermann, Jurgen (2013). Plants of Outback South Australia. Adelaide: State Herbarium of South Australia. p.215. ISBN9781922027603.
1 2 Mitchell, A.S.; Norris, E.H. "Sida corrugata". PlantNET-New South Wales Flora online. Royal Botanic Gardens Sydney. Retrieved 31 August 2025.
1 2 "Sida corrugata". VICFLORA-Flora of Victoria. Royal Botanic Gardens Victoria. Retrieved 10 September 2025.
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