Has anybody yet seen the book advertised here?

http://pup.princeton.edu/titles/7595.html

It looks more like a reference for the plant hobbyist, like Exotica. something
I would ask for in the library, rather than spend money on.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)