the cactaceae by N.L. Britton & J.N. Rose free in pdf form both searchable and a direct image scan.
http://carnegiescience.edu/pub...
there is more books like this at
http://www.cactuspro.com/bibli...

Cool thanks Mark!

thanks much for the info, I copied the files to my computer., David

Thank you Mark. That is sure a lot of information. And for free yet. I only wish you could find Sansevieria like that. That is my favorite plants. Books are scarce and expensive.
Stush

Well, Mark really came thru. Thanks for finding me some great books. I have told many friends on other sites.
Stush

I'm trying to figure out an easy route for folks to the pictures on this site - it is shared site between MOBOT and the Desert Botanical Gardens and has pretty definitive picture ID's for the cacti/ succulents. It isn't a very fast site, so when you're entering a name you want to search on, be sure that it actually "took" the letters you put in. If it didn't, slooooowwww down, lol. Additionally, when you search, I would be as general as possible, i.e. "Ferocactus" instead of "Ferocactus grusonii var. ....."


- http://www.livingcollections.o...
- Enter "Desert Botanical Gardens" by clicking on its name
- In order to see pictures (and, admittedly, it is kind of sparse as of yet) click on More in the upper left hand navigation bar.
- In the Taxon box, enter the name. Yep, it's gotta be latin, at least at this part of the site. This is where I suggest being general.

Thanks Sheryl, I look forward to checking the links out!!

It's good for when you need a positive ID, at least.

You are so welcome, Greg!