Let's see, Daiv took my first choice and eduart, my second so here's a fresh shot inspired by the latest issue of Bradlaya
Paste this URL into a fresh browser window for a full resolution image
http://dgimages.smugmug.com/photos/78701056-O.jpg
Click through the URL for a full resolution image
GeneS-dgimages
Oh, BTW, Micanthrocereus streckeri would be the title ... GeneS