help interpreting ICBN

[Gomez Luis Diego]

The valid name becomes Planta hypothetica Chavez ex Sanchez 1850
if typical material remains the same and the original concept is not
changed in any substantial way.

On Fri, 4 Apr 1997, JOSEPH E. LAFERRIERE wrote:

> I have  a question  concerning interpretation of the ICBN. It
> states  that  if  an  author  states  that  a  name  is  only
> provisionally accepted, it is not validly published. Consider
> then the following scenario:
>
> In 1850,  Chavez publishes  the name  Planta hypothetica.  He
> includes a  description, but  states that  the name  is  only
> provisionally accepted.  In 1860,  Sanchez uses Chavez's name
> with a  longer description,  crediting it  to Chavez. Sanchez
> accepts the name with no mention of provisionality. Does this
> then validate the name? Should the citation be
>
> A) Planta hypothetica Chavez 1850
> B) Planta hypothetica Chavez ex Sanchez 1860
> C) Planta hypothetica Sanchez 1860
> D) None of the above, as the name remains invalid.
>
> --
> Dr. Joseph E. Laferriere, Herbario, CEAMISH, Universidad
> Autonoma del Estado de Morelos, Cuernavaca, Morelos, Mexico  -- OR --
> c/o Mary Laferriere, 18 Maple Ave #3, Centerdale RI 02911 USA
>