My thanks to everyone who sent suggestions for my herb proved
to be an interesting quest, & turned up good references, like "Exotica" &
the Herb Research site..but alas, no pictures. The American Botanical
Council directed my client to a photo stock place which HAS photos, but
charges more than I'm getting for my illustrations (sigh)...

At this point we're settling on skipping the yohimbe, & I've learned why we
should leave the research to the client, unless that time is included in
the contract!

-Thanks again!
Gael N.