Herbal characteristics

["GC" <glenclaston@xxxxxxxxxxxxx>]

Dana, I wonder if it's possible to extract another
piece of information from your identifications
than we have considered up to now, the latitude of
the plants in question.

I've read many herbals where they list plants that
will and will not grow in colder northern
latitudes but are in Pliny, etc.  They do this to
suggest substitutes for plants described by the
ancient writers.  One plant you had identified as
the Blue Bell of Scotland got me thinking about
this, since many cold weather plants won't grow in
places like Greece or Italy, and many Greek and
Italian plants won't grow in Scotland.  These seem
like plants the author had handled, and it may be
a very way to narrow the field.

Can you say off the top of your head if your
numerous identifications have a restricted
latitude or region, or is there somewhere you can
recommend where I can gather this information?

GC