Looking through their other pictures... seems like they're just lifting their images from Pinterest right and left, though it's not clear who did the actual uploading to Pinterest.
Among the Dudleya images I looked at, there were also examples taken from succulentguide.com, DG, and Flickr without credits. I don't think people realize how easy it is to track down the original source images (and secure permission!).
http://images.google.com
search by image (camera icon) -> paste URL
look at bottom of results to see other matching images on the web
