Biology:Gossia bidwillii

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Short description: Species of tree


Python tree
Gossia bidwillii flower and foliage
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Gossia
Species:
G. bidwillii
Binomial name
Gossia bidwillii
(Benth.) N.Snow & Guymer
Synonyms
  • Austromyrtus racemulosa Burret
  • Austromyrtus bidwillii (Benth.) Burret

Gossia bidwillii, known as the python tree is a rainforest myrtle of eastern Australia.[1][2][3] The usual habitat is the drier rainforest areas. The range of natural distribution is from the Hunter River (32° S) in New South Wales to Coen (13° S) in far northern Queensland.[4]

Other common names include lignum-vitae, scrub ironwood and smooth-barked ironwood.

Taxonomy

The species was first described in 1867 by George Bentham as Myrtus bidwillii,[5][6] but in 2003 was transferred to the genus, Gossia, by Neil Snow, Gordon Guymer and Sawvel.[5][7]

Description

A medium-sized tree, usually around 18 to 25 metres tall and up to 20 cm in trunk diameter. The trunk is crooked and not cylindrical, the bark being smooth and orange/brown in colour with attractive green blotchy markings. Hence the common name of Python Tree. The bark sheds in thin papery flakes.

Branchlets are smooth and brown. The leaves are opposite, simple and not toothed, being 5 to 8 cm long. Elliptic to ovate in shape with a leaf stem 3 to 6 mm long. Oil dots prominent when viewed with a lens, the leaf has a faint eucalyptus smell. Leaf venation evident, with a raised midrib on both sides, and an intramarginal vein around the leaf edge.

G. bidwillii.jpgseedlings

White, scented flowers form between October and December.[8] The fruit is a black berry. Flattened and warty, 6 mm in diameter. Inside are 3 to 5 attractive mauve coloured seeds. Fruit matures from January to May, eaten by various birds including the Rose crowned fruit dove.

Hyperaccumulation

Gossia bidwilii is Australia's first recorded hyperaccumulator. The tree accumulates excessively high levels of manganese (Mn) into its above ground biomass as an adaptation from high levels of manganese present in the soil.[9]

exposed roots of a Python Tree at Booyong Flora Reserve, Australia

References

  1. "Species profile - Gossia bidwilli". Queensland. Dept. of Environment and Science. 8 March 2022. https://apps.des.qld.gov.au/species-search/details/?id=27383. 
  2. "Gossia bidwillii (Benth.) N.Snow & Guymer". CSIRO. Lucid Central. 2020. https://apps.lucidcentral.org/rainforest/text/entities/gossia_bidwillii.htm. 
  3. Atlas of Living Australia (6 August 2022). "Species: Gossia bidwillii (Lignum)" (in en-AU). https://bie.ala.org.au/species/https://id.biodiversity.org.au/node/apni/2919596. 
  4. "Gossia bidwillii (Benth.) N. Snow & Guymer". National Herbarium of New South Wales. 6 August 2022. https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Gossia~bidwillii. 
  5. 5.0 5.1 "Gossia bidwillii". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. https://biodiversity.org.au/nsl/services/rest/name/apni/180918. 
  6. Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 275-276
  7. , pp. 1-95 39-44, Figs. 10, 11 , Wikidata Q55767955
  8. "Gossia bidwillii (MYRTACEAE); Python tree, ironwood". Brisbane Rainforest Action and Information network. 6 August 2022. http://www.brisrain.org.au/01_cms/details_pop.asp?ID=33. 
  9. Fernando, D.R; Woodrow, I.E; Bakkaus, E.J; Collins, R.N; Baker, A.J.M; Batianoff, G.N (2007). "Foliar Mn accumulation in eastern Australian herbarium specimens: prospecting for 'new' Mn hyperaccumulators and potential applications in taxonomy". Plant and Soil 293 (1-2): 145–152. doi:10.1007/s11104-007-9269-6. https://www.researchgate.net/publication/226081939_Variability_of_Mn_hyperaccumulation_in_the_Australian_rainforest_tree_Gossia_bidwillii_Myrtaceae. Retrieved 10 December 2025. 

Wikidata ☰ Q5587487 entry