Banksia ionthocarpa


Banksia ionthocarpa
Banksia ionthocarpa
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Banksia
Series: Banksia ser. Dryandra
Species: B. ionthocarpa
Binomial name
Banksia ionthocarpa
(A.S.George) A.R.Mast & K.R.Thiele

Banksia ionthocarpa is a shrub endemic to Western Australia. It was known as Dryandra ionthocarpa until 2007.

Taxonomy

B. ionthocarpa was first discovered in 1987 by professional seed supplier Peter Luscombe. The following year specimens were collected by both Margaret Pieroni and Alex George. For the next eight years, the species was referred to by the manuscript name Dryandra sp. Kamballup (M.Pieroni 20/9/1988). In 1996, Alex George formally published the species as Dryandra ionthocarpa, the specific epithet coming from the Greek ionthas ("shaggy") and carpos ("fruit"), in reference to the tuft of hair on each follicle. Indeed, George considered the fruit to be so distinctive that he placed it alone in a new series that he named Dryandra ser. Ionthocarpae.[1]

Since 1998, Austin Mast has been publishing results of ongoing cladistic analyses of DNA sequence data for the subtribe Banksiinae. His analyses have provided compelling evidence of the paraphyly of Banksia with respect to Dryandra; that is, it seems that Dryandra arose from within the ranks of Banksia.[2][3][4] Early in 2007, Mast and Kevin Thiele initiated a rearrangement of Banksia by sinking Dryandra into it as B. ser. Dryandra; Dryandra ionthocarpa thus became Banksia ionthocarpa. This transfer necessitated the setting aside of George's infrageneric arrangement of Dryandra; thus D. ser. Ionthocarpae is no longer current. Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of Dryandra is complete.[5]

Two subspecies are recognised, the autonym B. ionthocarpa subsp. ionthocarpa, and edit] References

  1. ^ George, Alex S. (1996). "New taxa and a new infragenetic classification in Dryandra R.Br. (Proteaceae: Grevilleoideae)". Nuytsia 10 (3): 313–408. 
  2. ^ Mast, Austin R. (1998). "Molecular systematics of subtribe Banksiinae (Banksia and Dryandra; Proteaceae) based on cpDNA and nrDNA sequence data: implications for taxonomy and biogeography". Australian Systematic Botany 11 (4): 321–342. doi:10.1071/SB97026. 
  3. ^ Mast, Austin R. and Thomas J. Givnish (2002). "Historical biogeography and the origin of stomatal distributions in Banksia and Dryandra (Proteaceae) based on Their cpDNA phylogeny". American Journal of Botany 89 (8): 1311–1323. doi:10.3732/ajb.89.8.1311. ISSN 0002-9122. PMID 21665734. http://www.amjbot.org/cgi/content/full/89/8/1311. Retrieved 2006-07-02. 
  4. ^ Mast, Austin R., Eric H. Jones and Shawn P. Havery (2005). "An assessment of old and new DNA sequence evidence for the paraphyly of Banksia with respect to Dryandra (Proteaceae)". Australian Systematic Botany (CSIRO Publishing / Australian Systematic Botany Society) 18 (1): 75–88. doi:10.1071/SB04015. 
  5. ^ Mast, Austin R. and Kevin Thiele (2007). "The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany 20: 63–71. doi:10.1071/SB06016. 

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