Dysoxylum pettigrewianum, commonly known as spur mahogany, spurwood, or Cairns satinwood, is a large tree in the family Meliaceae. It is native to the rainforests of Malesia, Papuasia and Queensland. In Queensland it occurs only in a small part of the northeast coast. Description The spur mahogany may reach in excess of tall, with a trunk to wide. It is known for its tall, branched and wandering buttress roots, which can reach up to in height and extend up to from the trunk. The rough flaky bark is brown with numerous lenticels. The large whorled leaves are imparipinnate with between 7 and 15 leaflets. They can reach up to long with a petiole up to . The petiole is sharply but very shortly winged and is swollen at its junction with the branch. The leaflets vary in size, the proximal ones are relatively small and the distal ones larger. The terminal leaflet is the largest, measuring up to . The inflorescences are racemes or spikes to about long, produced on the twigs (or rarely in the leaf axils). Appearing in December and January, they carry numerous small fragrant flowers which are sessile and creamy white in colour. The flowers have four linear to spathulate petals to long and a distinctive staminal tube (i.e. a tube made up of fused stamens) which is slightly flared at the tip. The fruits are a more or less pyriform capsule up to wide by long. They are dark brown on the outside with a warty appearance. At maturity they split to reveal the orange coloured interior with up to four seeds. Taxonomy The species was first described by the colonial botanist of Queensland Frederick Manson Bailey, from specimens collected from "Scrubs at the base of Bellenden-Ker Range and the Barron River." His description was published in Botany Bulletin. Department of Agriculture, Queensland 5: 9 in July 1892. Etymology The species epithet was chosen by Bailey to honour the Brisbane businessman and politician William Pettigrew. Bailey wrote: "After the Hon. William Pettigrew, who has always taken a deep interest in Queensland timbers." Distribution and habitat In Australia Dysoxylum pettigrewianum grows in well developed rainforest from just north of Hope Vale to the Paluma Range, just north of Townsville. It is also found in the Maluku Islands, New Guinea, and the Solomon Islands. It is found at altitudes from near sea level up to , reaching