In the Plant Base menu bar:- select Help | About
Plant Base

This release number indicates the edition of the database.
It is distinct from the the program version, which relates to
the application code modules rather than the data. The release
number does not change until the database files are replaced,
it is not altered by personal database changes.
It is only displayed from program version 1.5.4 onwards and will
also not be seen when older database editions are opened, although
the release number is stored internally for all database editions.
The number is also used to identify every individual record that
was added or updated in that release. For plant records it can
be displayed by clicking (and holding) on the record counter box
:-

For picture records - simply show the Picture details, using
the right mouse-button menu on any image or thumbnail.