Emblingia

Emblingia
Scientific classification
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Emblingiaceae
(Pax) Airy Shaw
Genus: Emblingia
F.Muell.
Species: E. calceoliflora
Binomial name
Emblingia calceoliflora
F.Muell.

Emblingia is a monospecific plant genus containing the species Emblingia calceoliflora, a herbaceous prostrate subshrub endemic to Western Australia. It has no close relatives, and is now generally placed alone in family Emblingiaceae.

Description

It is a perennial, herbaceous prostrate subshrub, with simple petiolate leaves with cartilage in their margins. The irregular, solitary flowers are white, cream, yellow, green or, pink, and occur from August to November. It has a non-fleshy fruit.[1][2][3][4]

Taxonomy

The genus and species were first published in 1861 by Ferdinand von Mueller in Fragmenta Phytographiae Australiae, based on specimens collected in the Murchison region by Pemberton Walcott and Augustus Frederick Oldfield.[5][6]

Placement of the genus within a family has previously been considered a difficult problem; it has at various times been placed in Capparaceae, Sapindaceae, Goodeniaceae and, in the Cronquist system, Polygalaceae.[7] In 1965, Herbert Kenneth Airy Shaw erected Emblingiaceae for the genus, and that family is now used for the genus in the APG II, Dahlgren, Reveal, Stevens, Takhtajan and Thorne systems.[8] Molecular analyses have confirmed the genus's placement in the Brassicales.[7][9]

Distribution and habitat

It is endemic to Western Australia, occurring in grey, yellow or red sand, on undulating sandplains of the west coast. It is most common in the Geraldton Sandplains and Carnarvon biogeographic regions, but also occurs on the north western edge of the Avon Wheatbelt.[4]

Ecology

It is not considered to be threatened.[4]

References

  1. ↑ Watson, L., and M. J. Dallwitz (1992 onwards). "Emblingiaceae". The families of flowering plants: descriptions, illustrations, identification, and information retrieval. Retrieved 2007-05-12. Check date values in: |date= (help)
  2. ↑ "Emblingiaceae". FloraBase. Department of Environment and Conservation, Government of Western Australia.
  3. ↑ "Emblingia". FloraBase. Department of Environment and Conservation, Government of Western Australia.
  4. 1 2 3 "Emblingia calceoliflora". FloraBase. Department of Environment and Conservation, Government of Western Australia.
  5. ↑ "Emblingia". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  6. ↑ "Emblingia calceoliflora". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  7. 1 2 Chandler, Gregory T. and Randall J. Bayer (2000). "Phylogenetic placement of the enigmatic Western Australian genus Emblingia based on rbcL sequences". Plant Species Biology 15: 57–72. doi:10.1046/j.1442-1984.2000.00024.x.
  8. ↑ "USDA - APHIS - Concordance of Family Names: E". Archived from the original on 2007-02-11. Retrieved 2007-05-12.
  9. ↑ Hall, Jocelyn C., Hugh H. Iltis and Kenneth J. Sytsma (2004). "Molecular phylogenetics of core Brassicales, placement of orphan genera Emblingia, Forchhammeria, Tirania, and character evolution". Systematic Botany 29 (3): 654–669. doi:10.1600/0363644041744491.

Further reading

This article is issued from Wikipedia - version of the Wednesday, September 24, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.