Clay mariposa lily. The red markings guide insect visitors to nectar glands.
<a rel="nofollow" class="external text" href="https://flickr.com/people/33466410@N00">Jerry Kirkhart</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://flickr.com/photos/33466410@N00/4683259331">Mariposa Lily (Calochortus argillosus)</a>