Given its vibrant chartreuse color, it isn't surprising that wolf lichen (Letharia vulpina) has been used by various indigenous groups to make a dye. Perhaps more of a curiosity is that it is toxic, and has reportedly been used as a poison, and medicinal remedy.

From Sunday's trail run in the Chumash Wilderness on the Vincent Tumamait Trail.

Some related trail runs: Fresh Air Traverse, Mt. Pinos - Mt. Abel Out & Back