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.