''Austrobuxus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

plant Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclud ...

s under the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Picrodendraceae Picrodendraceae is a family of flowering plants, consisting of 80 species in 24 genera.Stephens, P.F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008. http://www.mobot.org/MOBOT/Research/APweb/ These are subtropical to tropical ...

first described as a genus in 1861. It is native to

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...

Papuasia Papuasia is a Level 2 botanical region defined in the World Geographical Scheme for Recording Plant Distributions (WGSRPD). It lies in the southwestern Pacific Ocean, in the Melanesia ecoregion of Oceania and Tropical Asia. It comprises the f ...

, and

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. The region with the highest diversity is

New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...

.Kew World Checklist of Selected Plant Families
/ref>van Welzen, P.C. & Forster, P.I. (2010). A revision of Malesian ''Austrobuxus'' (Picrodendraceae/Euphorbiaceae s.l. subfam. Oldfieldioideae). Nordic Journal of Botany 28: 189-195. ;Species ;formerly included moved to other genera: ''

Kairothamnus ''Kairothamnus'' is a genus of plants under the family Picrodendraceae described as a genus in 1980. The only known species is ''Kairothamnus phyllanthoides'', endemic to Morobe Province in Papua New Guinea. See also *Taxonomy of the Picrodendr ...

Longetia ''Longetia'' is a genus of plants under the family Picrodendraceae first described as a genus in 1866. It has only one known species, ''Longetia buxoides'', endemic to New Caledonia. ;formerly included moved to other genera: ''Austrobuxus'' ''Sc ...

Scagea ''Scagea'' is a genus of plants under the family Picrodendraceae described as a genus in 1986. The entire genus is endemic to New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia cente ...

References

Picrodendraceae Malpighiales genera {{Malpighiales-stub