Van: tdwg-content-bounces@lists.tdwg.org namens greg whitbread
Verzonden: zo 21-11-2010 11:22

> To complete the circle ...

> http://www.nhm.ac.uk/hosted_sites/tdwg/plants.html  =

> Plant Taxonomic Database Standards No. 3

***
I have not looked at this in detail, but a truly outrageous error
immediately jumps out!, where it says
    "The full name of an intergeneric hybrid has in addition
     an "x" (lower case alphabetic x symbol) preceding the
     generic name as a generic hybrid marker. "

    "The full name of a named interspecific hybrid or chimaera
     has in addition an "x" (lower case alphabetic x) or "+"
     plus sign) preceding the species epithet"

There is no conceivable ambiguity in
     "Art. H.1.1.  Hybridity is indicated by the use of the
      multiplication sign × or by the addition of the prefix
     “notho-”¹ to the term denoting the rank of the taxon."

There never has been a "(lower case alphabetic x)" allowed, except
where there is force majeure.
     "Rec. H.3A.2.  If the multiplication sign is not available
      it should be approximated by a lower case letter “x”
     (not italicized)."

(BTW, there is no such thing as a "species epithet" in botany;
it is a "specific epithet").

Paul van Rijckevorsel