Xylomelum

See text Xylomelum is a genus of six species of flowering plants, often commonly known as woody pears, in the family Proteaceae and are endemic to Australia.

Plants in the genus Xylomelum are shrubs or trees that typically grow to a height of 4–14 m (13–46 ft) and have simple, leathery leaves arranged in opposite pairs.

The fruit is a woody, more or less pear-shaped follicle attached at the larger end, that eventually splits into two halves and releases two winged seeds.

[5][6] The name Xylomelum is derived from the Greek xylon meaning "wood" and melon "tree-fruit", referring to the woody fruit.

[6] In 1810, Robert Brown gave a key to the genera of Proteaceae in Transactions of the Linnean Society of London, placing Xylomelum in the group of Proteaceae which have dehiscent fruit and are unilocular with two seeds, thereby grouping Anadenia, Grevillea, Hakea, Lambertia, Orites and Rhopala together.

Within the group, Xylomelum is distinguished from Orites and Rhopala by having winged seeds, a thickened woody follicle with an excentric locule, and a club-shaped stigma.

[17] In 1975, Johnson and Briggs placed Xylomelum in the subfamily Grevilleoideae and the tribe Heliciaea (together with Helicia, Triunia and Hollandaea).

Engraving of Banksia pyriformis (fruit and seed) from Gaertner's 'De Fructibus...'