Solanum oligacanthum
F.Muell. Desert NightshadeErect, commonly root-suckering shrub to 0.5(–1) m high, vegetative parts and sepals greyish from a dense covering of minute stellate hairs; prickles to c. 15 mm long, stiffly spreading from stems, sometimes paired at base of petiole, an occasional single prickle arising from near the centre of the adaxial leaf surface. Leaves very broadly ovate, 7–20 mm long and wide, apex obtuse or rounded, base obtuse to cordate, margins entire and often undulate, adaxial surface usually less densely hairy than abaxial; petiole 1–5 mm long. Inflorescences simple, 1–6-flowered; peduncle to 10 mm long. Flowers on pedicels 3–5 mm long; calyx 5–8 mm long, lobes triangular, 2–4 mm long; corolla rotate, 20–25 mm diam., purple, hairy on abaxial surface, lobes obtuse; anthers 4–5 mm long. Berry globose to depressed-globose, 4–10 mm diam., pale yellow when ripe; seeds 4–5 mm long, black or dark brown. Flowers Mar. (1 record)
VRiv. native to SA, Qld and NSW. Known in Victoria from a single spontaneous 2020 occurrence from the vicinity of a farm dam wall near Oxley in north-east Victoria.
The source of the plants is unknown, but possibly the result of transport of seed by birds migrating from inland Australia or from movement of stock or fodder. It is known as a weed in south-eastern SA.