- Plant: Coville's Cactus (Ferocactus emoryi)
- Uploaded by SongofJoy
- Info: Thorns, spines, prickles or teeth / 2002-08-07 / License: Creative Commons (cc-by-sa-nc-3.0) (Attribution, ShareAlike, NonCommercial)
- Caption: Steven J. Baskauf http://bioimages.vanderbilt.edu/
