<p>Elephants tooth
Coryphantha (or mammillaria) elephantidens
Michoacan, Mex.
</p>
DBG   AZ/CD 21   roll 3
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/92252798@N07">Dick Culbert</a> from Gibsons, B.C., Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/92252798@N07/9331386544/">19.Coryphantha2</a>