Euphorbia tannensis

Euphorbia tannensis is a species of herb or shrub native to Australia and some Pacific islands.

Euphorbia tannensis
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Genus: Euphorbia
Species:
E. tannensis
Binomial name
Euphorbia tannensis
Subspecies

E. tannensis subsp. tannensis
E. tannensis subsp. eremophila

Description

It grows as an erect annual or perennial herb or shrub, from 10 centimetres to a metre in height, with green or yellow flowers.[1] It often appears spindly due to its leaves being deciduous.[2]

Taxonomy

This species was first published by Curt Polycarp Joachim Sprengel in 1809, based on a specimen collected by Georg Forster in . In 1977 two species, E. eremophila and E. finlaysonii, were submerged within E. tannensis as E. tannensis var. eremophila and E. tannensis var. finlaysonii respectively, these being treated as varieties of a new subspecies, E. tannensis subsp. eremophila.[2][3]

Distribution and habitat

This species is widespread on the Australian mainland, occurring in every mainland state, though only in the far north-west corner of Victoria (Australia).[2] It is widely reported as occurring only in Australia;[4] yet the type specimen was collected on Tanna in what is now Vanuatu, and it has also been recorded in New Caledonia.[5]

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References
  1. "Euphorbia tannensis Spreng". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. Hassall, David (1977). "The genus Euphorbia in Australia". Australian Journal of Botany. 25 (4): 429–453. doi:10.1071/BT9770429.
  3. "Euphorbia tannensis Spreng". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  4. "Euphorbia tannensis". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA).
  5. Morat, Philippe; Jaffré; Veillon, Jean-Marie. "The flora of New Caledonia's calcareous substrates". Adansonia. 3. 23 (1): 109–127.
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