Xanthidium tubiferum var. palmaforme Appendix A

"var. palmaforme" White, 1842, p.39, pl.4, fig.12.  Holotype: White, 1842, pl.4, fig.12.  Nomenclatural senior synonym: Xanthidium tubiferum var. recurvatum (as Hystrichosphaeridium recurvatum), which has the same holotype.  Nomenclatural senior synonym: Xanthidium tubiferum var. palmatum, which has the same holotype.  Nomenclatural junior synonym: Hystrichosphaeridium duplum, which has the same holotype.  This is not an illegitimate name.  For a full discussion, see Hystrichosphaeridium recurvatum.  Age: Senonian. Parent: Xanthidium tubiferum