Gyrostemon ramulosus (Corkybark)

Gyrostemon ramulosus is a plant in the family Gyrostemonaceae. It was first described by René Louiche Desfontaines in 1820.

It is native to dry zones in Western and South of Australia.

Gyrostemon ramulosus grows to shrubs or trees to 5 m (16 ft) tall, with corky bark on the old branches; the leaves are slender. Male flowers have pedicels that curve backwards, reaching up to 5 mm (0.20 in) in length and width when fully open, featuring a distinctly lobed calyx with pointed lobes and multiple anthers arranged in several layers.

Female flowers also possess backward-curving pedicels, reaching lengths of up to 7 mm (0.28 in), with a distinctly lobed calyx where the lobes are either pointed or blunt. Each female flower typically contains 20-30 carpels, each with a stalkless stigma that spreads to form a crown above the ring of ovaries. These flowers bloom between May and September. The pale brown spherical fruits, measuring up to 6 mm (0.24 in) in length, develop from multiple seed segments.