Usnea (unidentified species)

Usnea 1
On twig. From near Tallahassee, northern Florida.

Usnea 2
On twig. From near Tallahassee, northern Florida.

Usnea 3
On Quercus bark. From the San Francisco Bay Area, California.

Usnea 4
On Quercus bark. From the San Francisco Bay Area, California.

Usnea 5
"Usnea ceratina or flammea" -I.M. Brodo
On dead Pinus twig. From Great Wass Island, Maine.

Usnea 6
On Alnus bark. From northern coastal Washington.

Usnea 7
On twig. From Fort Canby State Park, southern coastal Washington.

Usnea 8
On Quercus prinus. From the Blue Ridge Parkway, Virginia.

Usnea 9
On bark. From the Kaibab Plateau, northern Arizona.

Usnea 9a
On bark. From the Kaibab Plateau, northern Arizona.

Usnea 14
On conifer. From the White Mountains, New Hampshire.

Usnea 16
On Quercus bark. From the San Francisco Bay Area, California.

Usnea 17
On Alnus twig. From Olympic National Park, Washington.

Usnea 18
On Quercus prinus bark. From along the Blue Ridge Parkway, Virginia.

Usnea 19
On twig. From coastal Oregon.

Usnea 20
On twig. From Sonoma County, California.