Hi all,
In the photo gallery are 2 pictures marked LABE-328, one dry, one wet. This lichen is growing on a dead twig of a bush in sagebrush steppe around 4000 feet. The upper thallus is nearly white, the lower is tan. The thallus is about 3cm, the lobes are 1.5 to 3mm. It has simple rhizines which are tan, .4mm or less in length and blunt tipped. The isidia are globular, brown in color (giving the whole lichen a brown appearance) and shinny. Spot tests are all negative.
Anyone have an idea what this is?