Jim Green Trail, on foothill pine (Pinus sabiniana)

Jim Green Trail, on blue oak (Quercus douglasii).

On coast live oak (Quercus agrifolia).

On coast live oak (Quercus agrifolia)

Spores large, brown, muriform, with a hyaline end. About 48x20µm.

On coast live oak (Quercus agrifolia). Thallus yellow, UV+O, esorediate, K+Y-R. Epihymenium K+V, amphithecium K+Y-R with norstictic acid crystals.

Sandstone. Spores 0-1 septate, narrowly ellipsoid, often curved; 19.9x4.4µm (n=4). All spot tests negative, but some POL+ granules observed.

Sandstone bedrock

On sandstone.

On ultramafic rock, uncommon in region.
Photographed with Polycauliona ignea.

On HCL+ sandstone in semi-arid annual grassland habitat.
Thallus squamulose, dark brown to grey, K+V.
Spore average size: 14.5x8.1µm with isthmus 3.4µm (n=4).

Los Padres National Forest, along High Mountain Lookout Road. On twigs of chaparral shrubs. Exciple strongly C+R. Spores with broad septum, >4µm

On sandstone. Thallus K+R with norstictic acid crystals. Epihymenium green, K+brown. Pycnidia not found. Spores large, ellipsoid, hyaline, simple. About 27x17µm.

On Quercus lobata trunk bark. Thallus white, spot tests negative. All parts POL-. Spores 3-septate to submuriform (6-9 cells), hyaline becoming dark brown. Average size 18.4x9.5 (n=9).

On red clay soil in a biotic crust community

On red clay soil in a biotic crust community.

On red clay soil in a biotic crust community. Thallus K-. Black forked tips of lobes.

Squamules brown but often densely pruinose. Cortex KC+R.

Thallus K+Y without norstictic acid crystals, suggesting stictic acid syndrome. Still need to confirm with P or TLC I think.

On decomposing granite.

On Tree of Heaven (Ailanthus altissima)

On Tree of Heaven (Ailanthus altissima). Apothecial disks C+O.

On Quercus agrifolia, bark of small branches.

Areoles not contiguous. Asci 4-6 spored, epihymenium with green tinge K+brown, thallus spot tests negative, densely pruinose. Paraphyses submoniliform, with 2 tip cells swollen.