- Banksia kingii
name = "Banksia kingii"
fossil_range = Late Pleistocene
image_caption = "Banksia kingii"
genus = "
subgenus = "Banksia"
sectio = "Banksia"
series = "Salicinae"
species = "B. kingii"
binomial = Banksia kingii
binomial_authority = Jordan & Hill|
Banksia kingii is an extinct species of tree or shrub in the
plant genus" Banksia". It is known only from fossilleaves and fruiting "cones" found in Late Pleistocene sedimentat Melaleuca Inlet in western Tasmania. These were discovered by Deny Kingin the workings of his tinmine. The leaves and fruiting cones were discovered at different locations, and since the sediment had been removed during mining, the stratigraphyof the fossils is unknown. The sediment from which they were recovered was alluvial, consisting of large, well-rounded fragments of quartzand schist.
The fossil leaves are about 12 centimetres long and one centimetre wide and very thick and robust. They clearly belong to genus "Banksia", section "Banksia", series "Salicinae", but not to any of the extant species in that series. The leaves of "B. plagiocarpa" (Dallachy's Banksia) are similar in form, shape and robustness, but differ strongly in structure. Leaves of "B. saxicola" (Grampians Banksia) are structurally the most similar to "B. kingii", but have a different shape. There also appear to be some affinities with "B. marginata" (Silver Banksia) and "B. canei" (Mountain Banksia), but insufficient to warrant the fossil's ascription to those species. The fossils are therefore considered representative of a new species, "B. kingii".
The fossil fruiting structures are cylindrical, about 6 centimetres high and 4½ centimetres wide. The structure had lost its old flower parts. It appears to be most closely related to "B. saxicola" and "B. canei", with some similarities to "B. marginata". The taxonomic situation therefore appears highly similar for both leaves and fruiting structures, and so the fruiting structures are ascribed to "B. kingii" despite the absence of any direct connection to the fossil leaves.
The species is believed to represent an extinct lineage. It is possible that it is an ancestor of "B. marginata", although "B. marginata" must have speciated well before the extinction of "B. kingii", given how widely it is now distributed. Extinction of "B. kingii" probably occurred in the late
Quaternary, and may have been caused by the climatic and physical disruption of glaciation, or by increased fire frequency due to human activity.
A formal description of "B. kingii" was published in 1991 by Gregory J. Jordan and Robert S. Hill, who named the species in honour of the discover, Deny King. Hence the species' full name is "Banksia kingii" Jordan & Hill". The
holotypeand a number of other specimens are stored in the Department of Plant Science at the University of Tasmania.
*cite journal | author = Jordan, Gregory J. and Robert S. Hill | year = 1991 | title = Two New "Banksia" Species from Pleistocene Sediments in Western Tasmania | journal = Australian Systematic Botany | volume = 4 | issue = 3 | pages = 499–511 | url = http://www.publish.csiro.au/?act=view_file&file_id=SB9910499.pdf | accessdate = 2006-08-28 | doi = 10.1071/SB9910499
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