Smilax australis (Austral Sarsaparilla / Lawyer Vine)

Smilax australis, commonly known as Austral Sarsaparilla or Lawyer Vine, is a robust Australian native climber known for its vigorous growth and characteristic prickly stems. Dioecious by nature, it produces separate male and female plants, creating a dynamic presence in bushland or garden settings. Stems can reach up to 8 m long, often intertwining with shrubs, fences, or other supports.

Leaves are lanceolate to broad-elliptic or ovate, mostly 5–15 cm long and 3–10 cm wide, with an apex ranging from acute to rounded and occasionally emarginate. The lamina is concolorous, glabrous, leathery, with prominent 5-veined and reticulate venation. Petioles are 5–15 mm long and twisted, and stipular tendrils coil up to 20 cm, aiding the vine in climbing; these tendrils often break off as the plant matures.

Flowers are produced in axillary umbels, either simple or compound, on pedicels 15–25 mm long. Tepals are small, 3–4 mm long, and green to reddish. Flowering is subtle but important for the production of fruit and supporting native insects.

The fruit is a shiny, globose black berry, 5–8 mm in diameter, containing 1–2 seeds, and provides a food source for birds and other wildlife. Smilax australis thrives in a variety of well-drained soils, tolerates full sun to part shade, and is highly suitable for creating natural screening or adding vertical interest in native gardens.