Alectoria sarmentosa is commonly called Witch‘s Hair in reference to the light green, pendant, fruticose thallus light that hangs 40 to 80cm from branches of trees. The main branches of the thallus are round in cross-section but can be slightly...

The below photo demonstrates the color of the thallus when wet. References McCune, B. and L. Geiser (2009) Macrolichens of the Pacific Northwest. Oregon State University Press, Corvallis, Oregon.

The thallus of Cladonia belldiflora is of the typical form of the genus Cladonia , posessing a primary thallus of prostrate squamules and a secondary thallus of upright podetia. The 1 to 3 cm tall podetia have a dense covering of squamules and typically...

Cladonia furcata has the unique growth form of genus Cladonia producing prostrate squmules as well as upright extensions with the fertile surfaces called podetia. Typically the podetia of C. furcata is highly branched, with the fertile branches being...

The thallus of Evernia prunastri appears fruticose, though is technically foliose due to the differing of the upper and lower surfaces in color, the upper being green-yellow and the lower whitish. The texture of the erect to drooping E. prunstri is...

Hypogymnia physodes is a small to medium foliose lichen measuring 2 to 10cm in diameter with a highly branched, though compact, thallus. Like other Hypogymnia species, the light color of the upper thallus surface contrasts sharply with lower black surface....

Photo was taken in the forest north of Lyons, Colorado.

Nephroma helviticum is commonly known as Fringed Kidney Lichen as the 8cm diameter, loosely appressed foliose lichen slightly resembles a kidney. The upper surface of the thallus is of a darker brown than the lower surface. Fine hair covers the lower...

The thallus of Peltigera canina is large and foliose, forming extensive mats with each lobe reaching at least 1 cm wide. The diameter of the entire thallus can reach up to 20 cm across. The upper surface is brown to greenish brown when wet and turns...

Peltigera leucophlebia is a large folios lichen loosely appressed to mossy rocks, soils or the forest floor. The thallus can exceede 40 cm in diameter with individual rounded lobes with ruffled edges 2 to 3 cm broad. The upper thallus surface color will...

Peltigera neopolydactyla is a large, loosely aprressed foliose lichen with lobes measuring between 2 and 4cm across. The upper surface of the thallus is olive green to pale or dark blue-gray with plane to undulating margins. The sexually reproductive...

Commonly known as the Devil’s Matchstick, the thallus consists of erect gray stalks emerging from a granular base on the surface of a rock. The stalks can be slightly branched, though are often completely solitary, standing up to 3 cm tall, and...

Pseudocyphellaria anomala is commonly referred to as Netted Specklebelly. The thallus of P. anomala is foliose and loosely appressed to the substrate, though free at the edges. The thallus measures 20 to 40cm across with lobes 1 to 2cm in diameter....