Thallus / medulla K-
Soralia abundant, not concave
Branches not constricted at base
Base of thallus not blackened
Brodo takes me to U. lapponica / U. glabresens couplet, but I probably missed something.
Usnea arizonica—western bushy beard lichen. The most common fruticose lichen in the garden. Little information is available on the internet concerning this lichen. Photographed at Regional Parks Botanic Garden located in Tilden Regional Park near Berkeley, CA
A pregnant squirrel was on the fence.