help interpreting ICBN

Fri Apr 4 06:56:39 CST 1997

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

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