0xd7 in species name ?

[Thomas Lammers]

The multiplication sign is used to denote taxa believed to be of hybrid
origin.  Under ICBN, you have a choice of denoting a hybrid via formula
(Quercus marilandica X Q. velutina) or via a binomial (Quercus
Xbushii).  Appendix I of the ICBN covers naming hybrids.  I don't much like
binomials for hybrids, unless it is something that actually has an
ecological role.  For example, Quercus Xbushii is found on sandy soils in
SE Iowa, ~50 km north of the range limit of one parent, Q.
marilandica.  Clearly, it has taken on "a life of its own" and has some
claim to a name.

At 06:31 PM 11/12/02 -0500, you wrote:
>USDAPlants uses the "times sign" 0xd7 for many Quercus (and other)
>species, e.g. Quercus X acutidens (which can be found with a search
>Quercus acutidens ). Here I render "X" as does ITIS.  IPNI omits it altogether
>
>Can someone tell me:
>
>a. What is the meaning of the "X"
>
>b. Aren't taxon names required by ICBN to be entirely in Latin
>characters? If yes or no, can someone provide references to ICBN
>article and perhaps to Winston's book (Judith Winston, "Describing
>Species"). In Winston, I see such a claim for ICZN but not that I can
>find for ICBN.
>
>c. Does ICBN support IPNI, ITIS, or both as accepted names.
>
>Thanks
>Bob, Not a Biologist, Morris

Thomas G. Lammers, Ph.D.

Assistant Professor and Curator of the Herbarium (OSH)
Department of Biology and Microbiology
University of Wisconsin Oshkosh
Oshkosh, Wisconsin 54901-8640 USA

e-mail:       lammers at uwosh.edu
phone:      920-424-1002
fax:           920-424-1101

Plant systematics; classification, nomenclature, evolution, and biogeography
of the Campanulaceae s. lat.

Webpages:
http://www.uwosh.edu/departments/biology/Lammers.htm
http://www.uwosh.edu/departments/biology/herbarium/herbarium.html
http://www.geocities.com/TheTropics/Resort/7156/lammers.html
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