Biology:Dysoxylum gaudichaudianum
| Dysoxylum gaudichaudianum | |
|---|---|
| |
| Ivory mahogany near Lacey Creek, Queensland | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Sapindales |
| Family: | Meliaceae |
| Genus: | Dysoxylum |
| Species: | D. gaudichaudianum
|
| Binomial name | |
| Dysoxylum gaudichaudianum Miq.[2]
| |
Dysoxylum gaudichaudianum, commonly known as ivory mahogany, is a species of rainforest tree in the family Meliaceae, native to Malesia, Queensland, and some southwest Pacific islands.
Description
The ivory mahogany is a large tree growing up to 36 m (118 ft) in height with a straight trunk up to 80 cm (31 in) diameter. The bark is smooth and often has teaspoon-sized depressions in it. Buttress roots are a feature of this tree and may reach up to 2.5 m (8 ft 2 in) high and 3.5 m (11 ft) wide.[2][3]
The very large leaves are produced in whorls and clustered towards the ends of the branches. They are imparipinnate with up to 14 pairs of leaflets, and measure up to 125 cm (49 in) in length.[2][3] This arrangement produces large spherical clusters of foliage (see gallery).
The leaflets are highly asymmetric at the base with one side of the leaf blade wider than the other. They measure up to 30 by 8 cm (11.8 by 3.1 in)[3]
The inflorescences are thyrses, about 70 cm (28 in) long, and produced in or close to the leaf axils. The flowers are a pale cream or green, 5-merous, with an unpleasant smell. The fruits are a capsule about 3 cm (1.2 in) diameter which is covered in fine brown hairs. They have five segments and contain up to 10 seeds about 1 cm (0.39 in) long.[2][3]
Phenology
Flowering in Australia occurs from September to January, with fruits ripening around October to February.[3][4]
Taxonomy
This species was originally described in 1868 by Friedrich Anton Wilhelm Miquel in the publication Annales Musei Botanici Lugduno-Batavi 4:15.[5]
The genus name comes from the Latin dys meaning "bad", and the Ancient Greek xylon meaning "wood", and refers to the unpleasant smell produced by some species. The species epithet was given to honour France botanist Charles Gaudichaud-Beaupré.[6]
Distribution and habitat
Occurs in Malesia, Christmas Island, Australia from the Cape York Peninsula to the Mary River, South East Queensland, and islands of the South-West Pacific, in lowland rainforest to 300m abl.
Gallery
The compound leaf
Foliage cluster
Trunk
Clusters of large pinnately compound leaves
Developing fruit
References
- ↑ IUCN SSC Global Tree Specialist Group & Botanic Gardens Conservation International (BGCI). (2019). "Dysoxylum gaudichaudianum". IUCN Red List of Threatened Species 2019: e.T156217920A156217922. doi:10.2305/IUCN.UK.2019-3.RLTS.T156217920A156217922.en. https://www.iucnredlist.org/species/156217920/156217922. Retrieved 21 June 2022.
- ↑ 2.0 2.1 2.2 2.3 "Dysoxylum gaudichaudianum". Centre for Australian National Biodiversity Research (CANBR), Australian Government. 2020. https://apps.lucidcentral.org/rainforest/text/entities/Dysoxylum_gaudichaudianum.htm.
- ↑ 3.0 3.1 3.2 3.3 3.4 Mabberley, D.J. (2021). "Dysoxylum gaudichaudianum". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Dysoxylum%20gaudichaudianum.
- ↑ "Dysoxylum gaudichaudianum". https://www.inaturalist.org/taxa/348331-Dysoxylum-gaudichaudianum.
- ↑ "Annales Musei Botanici Lugduno-Batavi". https://www.biodiversitylibrary.org/page/661010.
- ↑ Cooper, Wendy; Cooper, William T. (June 2004). Fruits of the Australian Tropical Rainforest. Clifton Hill, Victoria, Australia: Nokomis Editions. p. 288. ISBN 9780958174213. https://www.nokomis.com.au/product/nokomis-published-books/fruits-australian-tropical-rainforest/.
External links
- View a map of recorded sightings of Dysoxylum gaudichaudianum at the Australasian Virtual Herbarium
- See images of Dysoxylum gaudichaudianum on Flickriver
Wikidata ☰ Q15544734 entry
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