Banksia ser. Quercinae
Banksia" ser. "Quercinae is a valid botanic name for a series of "Banksia". First published by Carl Meissner in 1856, the name has had three circumscriptions. According to Meissner. "B." ser. "Quercinae" was first published in 1856, in Carl Meissner's chapter on the Proteaceae in A. P. de Candolle's "Prodromus systematis naturalis regni vegetabilis". It was one of four series into which the subgenus "Eubanksia" was divided. These four series were defined in terms of leaf characters, with series "Quercinae" containing the species with strongly dentate, cuneate to obovate leaves. As they were defined on  leaf characters alone, all of Meissner's series were highly heterogeneous. The placement and circumscription of "B." ser. "Quercinae" in Meissner's arrangement may be summarised as follows: Meissner's arrangement was current until 1870, when George Bentham published his arrangement, discarding all four of Meissner's series. According to George. In 1981, Alex George published a thorough revision of "Banksia" in his classic monograph "The genus Banksia L.f. (Proteaceae)". He reinstated "B." ser. "Quercinae", placing it within "B." sect. "Banksia", and redefining it as containing those species with awned perianths, and beaked follicles. Initially, the series contained three species , but in 1988 George moved "B. baueri" (Woolly Orange Banksia) into its own series, "B." ser. "Bauerinae", leaving just "B. quercifolia" (Oak-leaved Banksia) and "B. oreophila" (Western Mountain Banksia) in "B." ser. "Quercinae". The placement and circumscription of "B." ser. "Quercinae" in George's taxonomic arrangement of "Banksia" may be summarised as follows: According to Thiele and Ladiges. In 1996, Kevin Thiele and Pauline Ladiges undertook a cladistic analysis of morphological characters of "Banksia", which yielded a phylogeny somewhat at odds with George's taxonomic arrangement. "B." ser. "Quercinae" was found to be monophyletic, though quite closely related to  B. ser. "Spicigerae". They therefore retained the series, placing it next to "B." ser. "Spicigerae" in their arrangement. The placement and circumscription of "B." ser. "Quercinae" in Thiele and Ladiges' arrangement may be summarised as follows: Thiele and Ladiges' arrangement remained current only until 1999, when George's treatment of the genus for the "Flora of Australia" series of monographs was published. This was essentially a revision of George's 1981 arrangement, which took into account some of Thiele and Ladiges' data, but rejected their overall arrangement. With respect to "B." ser. "Quercinae", George's 1999 arrangement was no different  from that of 1988. Recent developments. Since 1998, Austin Mast has been publishing results of ongoing cladistic analyses of DNA sequence data for the subtribe Banksiinae. His analyses suggest a phylogeny that is very greatly different from George's taxonomic arrangement, including finding "Banksia" to be paraphyletic with respect to "Dryandra". With respect to "B." ser. "Quercinae", however, Mast's analysis concurs with previous arrangements, placing its two species alone in a clade that is fairly widely separated from other clades. Early in 2007 Mast and Thiele initiated a rearrangement of "Banksia" by transferring "Dryandra" into it, and publishing "B.  subg. Spathulatae" for the species having spoon-shaped cotyledons. The members of "B." ser. "Quercinae" fall within "B." subg. "Spathulatae", but no further details have been proffered. Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of "Dryandra" is complete.