necklace she-oak

Allocasuarina monilifera is usually a monoecious shrub that typically grows to 0.5–4 m (1 ft 8 in – 13 ft 1 in) high and 1–4 m (3 ft 3 in – 13 ft 1 in) wide. Its branchlets are 150 mm (5.9 in) long, the leaves reduced to erect to slightly spreading, scale-like teeth 0.5–1 mm (0.020–0.039 in) long, arranged in whorls of six to nine around the branchlets. The sections of branchlet between the leaf whorls are 6–11 mm (0.24–0.43 in) long, 0.6–1.2 mm (0.024–0.047 in) wide and are slightly waxy. Male flowers are arranged in spikes 10–35 mm (0.39–1.38 in) long, the anthers 0.7–1.2 mm (0.028–0.047 in) long. Female cones are cylindrical, on a peduncle 2–10 mm (0.079–0.394 in) long. Mature cones are 15–30 mm (0.59–1.18 in) long and 8–14 mm (0.31–0.55 in) in diameter containing winged seeds 5–6 mm (0.20–0.24 in) long.

Allocasuarina monilifera grows in heath and woodland in dry coastal areas of northern and eastern Tasmania, on Flinders Island and the islands of the Kent Group in Bass Strait.