Polyosma

Polyosma is a genus of about 60 species of trees native to south-east Asia. They occur from China south through south-east Asia to the east coast of Australia, New Guinea, the Solomon Islands and New Caledonia.

Polyosma
Polyosma cunninghamii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Escalloniales
Family: Escalloniaceae
Genus: Polyosma
Blume
Species

About 60; see text.

Its taxonomic placement has long been uncertain: it was traditionally placed in Grossulariaceae, but in the APG II system it was given its own family, Polyosmaceae, which was unplaced as to order within the euasterids II (campanulids) clade.[1] More recent research found Polyosmaceae to be a sister to the Escalloniaceae, so for simplicity's sake the Angiosperm Phylogeny Website now recommends the latter family be expanded to include this genus.[2]

Species include:

  • Polyosma alangiacea F.Muell. – white alder[3]
  • Polyosma brachyandrum Domin[3]
  • Polyosma brachystachys Schltr.[4]
  • Polyosma cambodiana Gagnepain – dou xian mu[5]
  • Polyosma comptonii Baker f.[4]
  • Polyosma cunninghamii Benn.[3]
  • Polyosma discolor Baill.[4]
  • Polyosma hirsuta C.T.White – Alder[3]
  • Polyosma integrifolia Blume[5]
  • Polyosma kouaouana Pillon[4]
  • Polyosma leratii Guillaumin[4]
  • Polyosma pancheriana Baill.[4]
  • Polyosma podophylla Schltr.[4]
  • Polyosma reducta F.Muell.[3]
  • Polyosma rhytophloia C.T.White & W.D.Francis[3]
  • Polyosma rigidiuscula F.Muell. & F.M.Bailey[3]
  • Polyosma spicata Baill.[4]
  • Polyosma subintegrifolia (Guillaumin) Pillon[4]

References
  1. Angiosperm Phylogeny Group (2003). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". Botanical Journal of the Linnean Society. 141 (4): 399–436. doi:10.1046/j.1095-8339.2003.t01-1-00158.x.
  2. Stevens, P (2001). "Angiosperm Phylogeny Website". Missouri Botanical Garden. Retrieved 2009-02-04.
  3. "Polyosma". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2009-02-05.
  4. Pillon, Y. (2018). "Nomenclature and typification in Polyosma (Escalloniaceae) from New Caledonia, with the description of a new species" (PDF). Phytotaxa. 371 (4): 267–272. doi:10.11646/phytotaxa.371.4.4.
  5. "Polyosma cambodiana Gagnepain". Flora of China. www.efloras.org. Retrieved 2009-02-05.


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