<a href="//commons.wikimedia.org/wiki/Blysmus_rufus" title="Blysmus rufus">Blysmus rufus</a>
Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 332.
<a rel="nofollow" class="external free" href="https://plants.usda.gov/java/largeImage?imageID=scru2_001_avd.tif">http://plants.usda.gov/java/largeImage?imageID=scru2_001_avd.tif</a>