Austrobuxus swainii
| Hairybark | |
|---|---|
 | |
| Austrobuxus swainii, trunk | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Malpighiales |
| Family: | Picrodendraceae |
| Genus: | Austrobuxus |
| Species: | A. swainii |
| Binomial name | |
| Austrobuxus swainii (Beuzev. & C.T.White) Airy Shaw | |
| Synonyms | |
| |
Austrobuxus swainii is a rare rainforest tree in the Picrodendraceae family. It is endemic to north east New South Wales and south eastern Queensland, Australia. Occurring from the Bellinger River in the south to Tallebudgera Creek in the north. The common names are pink cherry or hairybark. The habitat is less fertile sedimentary based soils, often associated with the Coachwood, in high rainfall areas. Listed on ROTAP, as a threatened species, with a rating of 3RCa.
Description
A medium to large tree, 40 metres tall[1] and a trunk diameter of one metre. The trunk is not cylindrical, flanged or irregular, somewhat buttressed at the base. Bark is scaly, grey or brown. Bark sheds in irregular patches, leaving slight depressions. Small branches are slender, grey or fawn in colour. Dotted with many pale lenticels.
Leaves 7 to 14 cm long, 2 to 4 cm wide. Lanceolate in shape, opposite on the stem with around 40 small teeth on the leaf edges. Leaf stalks up to 10 mm long. Old red leaves can be seen in the canopy.
Flowers & fruit
Yellow or green flowers form on panicles from April to June. Tiny flowers 4 petalled. The panicle is around 25 mm long, forming from the forks of the leaves. The fruit is a dark brown or black capsule, around 13 mm long, with two protruding styles at the fruit's apex. The capsule splits into four parts with two glossy brown seeds, 6 mm long. Fruit mature from February to March. Fresh seed or cuttings are advised for regeneration.
References
- Floyd, A.G., Rainforest Trees of Mainland South-eastern Australia, Inkata Press 2008, ISBN 978-0-9589436-7-3 page 286
- "Austrobuxus swainii". PlantNET - NSW Flora Online. Retrieved 2010-03-10.