In message .com,
" writes
Strange question I know but is there a system for plants similar to the
ISBN system for books whereby each plant type is given a unique ID
code?

Thanks in advance

Neil

There is not a numeric system. There are two codes; the ICBN
(International Code for Botanical Nomenclature) for wild(ish) plants;
and the ICNCP (International Code of Nomenclature for Cultivated Plants)
for cultivated plants.

A plant type can have more than one name, if the taxonomy is disputed.
--
Stewart Robert Hinsley