Caption: Waviness
Photographer: Ken-ichi Ueda
Locality: Oakland, California, United States (37.842647, -122.194139)
Notes: Behold the waviness of <i>Atrichum selwynii</i>. It actually has a very characteristic look (unlike <em>a lot</em> of the other mosses we looked at), so you would think a gestalt ID would be a cinch, but the guide everyone was using didn't have a pic from this perspective. Weird.