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recurvatum ([[White, 1842]], p.39, pl.4, fig.12) [[Lejeune-Carpentier, 1940]], p.B221-B222.  Holotype: [[White, 1842]], pl.4, fig.12.  Originally [[Xanthidium tubiferum var. recurvatum Appendix A|Xanthidium tubiferum]] var. [[Xanthidium tubiferum var. recurvatum Appendix A|recurvatum]] (Appendix A), subsequently (and now) Hystrichosphaeridium recurvatum.  Nomenclatural junior synonyms: [[Xanthidium tubiferum var. palmatum Appendix A|Xanthidium tubiferum]] var. [[Xanthidium tubiferum var. palmatum Appendix A|palmatum]] [subsequently Hystrichosphaeridium palmatum (White), an illegitimate name], [[Xanthidium tubiferum var. palmaforme Appendix A|Xanthidium tubiferum]] var. [[Xanthidium tubiferum var. palmaforme Appendix A|palmaforme]] and [[Hystrichosphaeridium duplum]], since they all have the same holotype as Hystrichosphaeridium recurvatum.  [[White, 1842|White (1842]], p.39) named "The twelfth ... species of the genus Xanthidium ... the Tubiferum recurvatum or palmaforme - the curved or palm-formed Tubiferum", thus presenting two epithets in his text.  To compound matters, the single illustration was labelled "X. tubiferum palmatum".  Since prior to 1953 alternative names were allowed under the I.C.B.N., and since [[White, 1842|White (1842]]) provided a description and illustration, the taxon was validly published.  The correct name would be that chosen by the first subsequent author to make such a choice, and this was [[Bronn, 1848|Bronn (1848]], p.1375), who used the name [[Xanthidium palmatum Appendix A|Xanthidium palmatum]], at species rank.  When [[Downie and Sarjeant, 1965|Downie and Sarjeant (1965]], p.121) transferred [[Xanthidium palmatum Appendix A|Xanthidium palmatum]] to Hystrichosphaeridium, they created an illegitimate combination - a junior homonym of Hystrichosphaeridium palmatum Deflandre and Courteville.  Hence, since [[Xanthidium tubiferum var. recurvatum Appendix A|Xanthidium tubiferum]] var. [[Xanthidium tubiferum var. recurvatum Appendix A|recurvatum]] had been raised to specific rank, as Hystrichosphaeridium recurvatum, by [[Lejeune-Carpentier, 1940|Lejeune-Carpentier (1940]]), "recurvatum" becomes the correct epithet as long as the epithet "palmatum" remains unavailable.  Age: Senonian.
[[Image:Hystrichosphaeridium recurvatum.jpg]]
[[Category:Taxon]]
[[Category:Species|recurvatum Hystrichosphaeridium]]
[[Category:MainIndex]]
Parent: [[Parent Genus::Hystrichosphaeridium]]
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 <I><B>recurvatum</B></I> ([[White, 1842]], p.39, pl.4, fig.12) [[Lejeune-Carpentier, 1940]], p.B221-B222.&nbsp; Holotype: [[White, 1842]], pl.4, fig.12.&nbsp; Originally <I>[[Xanthidium tubiferum var. recurvatum Appendix A|Xanthidium tubiferum]]</I> var. <I>[[Xanthidium tubiferum var. recurvatum Appendix A|recurvatum]]</I> (Appendix A), subsequently (and now) <I>Hystrichosphaeridium recurvatum</I>.&nbsp; Nomenclatural junior synonyms: <I>[[Xanthidium tubiferum var. palmatum Appendix A|Xanthidium tubiferum]]</I> var. <I>[[Xanthidium tubiferum var. palmatum Appendix A|palmatum]]</I> [subsequently <I>Hystrichosphaeridium palmatum</I> (White), an illegitimate name], <I>[[Xanthidium tubiferum var. palmaforme Appendix A|Xanthidium tubiferum]]</I> var. <I>[[Xanthidium tubiferum var. palmaforme Appendix A|palmaforme]]</I> and <I>[[Hystrichosphaeridium duplum]]</I>, since they all have the same holotype as <I>Hystrichosphaeridium recurvatum</I>.&nbsp; [[White, 1842|White (1842]], p.39) named "The twelfth ... species of the genus Xanthidium ... the <I>Tubiferum recurvatum</I> or <I>palmaforme</I> - the curved or palm-formed Tubiferum", thus presenting two epithets in his text.&nbsp; To compound matters, the single illustration was labelled "<I>X. tubiferum palmatum</I>".&nbsp; Since prior to 1953 alternative names were allowed under the I.C.B.N., and since [[White, 1842|White (1842]]) provided a description and illustration, the taxon was validly published.&nbsp; The correct name would be that chosen by the first subsequent author to make such a choice, and this was [[Bronn, 1848|Bronn (1848]], p.1375), who used the name <I>[[Xanthidium palmatum Appendix A|Xanthidium palmatum]]</I>, at species rank.&nbsp; When [[Downie and Sarjeant, 1965|Downie and Sarjeant (1965]], p.121) transferred <I>[[Xanthidium palmatum Appendix A|Xanthidium palmatum]]</I> to <I>Hystrichosphaeridium</I>, they created an illegitimate combination - a junior homonym of <I>Hystrichosphaeridium palmatum</I> Deflandre and Courteville.&nbsp; Hence, since <I>[[Xanthidium tubiferum var. recurvatum Appendix A|Xanthidium tubiferum]]</I> var. <I>[[Xanthidium tubiferum var. recurvatum Appendix A|recurvatum]]</I> had been raised to specific rank, as <I>Hystrichosphaeridium recurvatum</I>, by [[Lejeune-Carpentier, 1940|Lejeune-Carpentier (1940]]), "<I>recurvatum</I>" becomes the correct epithet as long as the epithet "<I>palmatum</I>" remains unavailable.&nbsp; Age: Senonian.
-[[Image:Hystrichosphaeridium recurvatum.jpg]]
+<CENTER>[[Image:Hystrichosphaeridium recurvatum.jpg]]</CENTER><BR>
 [[Category:Taxon]]
 [[Category:Species|recurvatum Hystrichosphaeridium]]

Hystrichosphaeridium recurvatum - Revision history

Maintenance script at 12:56, 8 September 2015

Maintenance script at 04:19, 1 September 2015