Xanthidium tubiferum var. palmaforme Appendix A
From dinoflaj2
"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