Veratrum californicum, aka. Corn Lily, is the only species of Veratrum in Arizona.

I much prefer to upload my FULL sized photos to Photobucket.com, (it's Free!) then just copy the "HTML Tag" Just Below each photo on your photobucket page. Next paste that "Tag" into the message (right here) in the body of the post on GardenWeb. You can also do multiple Pic's in the same post. Simple and no resizing and you can see your pictures when you preview the post before you click the "submit message" button. HTH Chris Don't paste it on the link box below the post, just put it right in the message above or below your post.

Tree shown has the silky hairs of M. biloba (M. officinalis biloba), did you wait for the document to open? It takes some seconds for the text to appear but when it does the link opens it right on the pertinent part of what is otherwise a multiple page journal that would have to be gone through. Document also has a key to all the related species in the group. Studying that would show you how to tell them apart. This post was edited by bboy on Fri, Aug 9, 13 at 14:23

Just "google" it. Here is a link that might be useful: Google results for Duranta erecta 'Sapphire Showers'