It was reinstated with a new circumscription by Alex George in 1996, but was ultimately discarded again in 2007 when Austin Mast and Kevin Thiele sank Dryandra into Banksia.
Diplographma was first published by Brown in his 1830 Supplementum primum prodromi florae Novae Hollandiae.
Along with many of Meissner's infrageneric taxa, which were overly reliant on leaf characters, Bentham discarded D. sect.
The whole question requires further investigation on the part of those who may have a sufficient supply of good fruits of the several species."
[5] When Alex George published his revision of Dryandra in 1996, he recognised that D. bipinatifida possessed a number of very distinctive characters, especially in its fruiting structure.
Diplophragma in George's arrangement, as amended in 1999[3] and 2005,[7] may be summarised as follows: Since 1998, Austin Mast has been publishing results of ongoing cladistic analyses of DNA sequence data for the subtribe Banksiinae.
[8][9][10] Early in 2007, Mast and Kevin Thiele initiated a rearrangement of Banksia by sinking Dryandra into it as B. ser.
Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of Dryandra is complete.