Unsure if this is calcareous or siliceous, locally quarried stones for a fence around an old cemetery.
Host Ilex opaca. Second image shows orange pigment in hymenium. Third image shows hymenium going purple with KOH. Determination by Malcolm Hodges, who took the two microscope images.
Host black gum. 2nd-4th images by Malcolm Hodges. Determination by James Lendemer. Second image shows fuzzy disk. Third and fourth images show spores: which are hyaline, spherical, simple, about 3.5-4 microns in diameter; asci polysporous, 24+ spores/ascus; disk biatorine, all parts colorless; photobiont chlorococcoid.
On oak. ID by @mhodges1957 with thanks: spores brown, 1-septate, 17-22 microns long, spores acute-tipped
On oak. ID by @mhodges1957 with thanks: spores brown, 1-septate, 17-22 microns long, spores acute-tipped
On oak. ID by @mhodges1957 with thanks: black disks, spores brown, 1-septate, 13-14.5 microns long, spores w/mostly rounded tips.
I think this is a Lecanora but not positive it isn't O africana. On oak.
On oak. Not sure this is the right Lecanora
On oak. Not sure this is the right Lecanora
On magnolia virginiana. Second image and determination by Malcolm Hodges, with thanks. His report: Spores hyaline, muriform, 8/ascus, about 40 x 13 microns; photobiont trentepohlioid; perithecia oblong with eccentric ostioles; thallus UV+ yellow
On water oak. Determination by Malcolm Hodges, with thanks. His report: large muriform spores, paraphyses with ornamented tips, thallus K+ yellow
On water oak. Second image of spores and determination by Malcolm Hodges, with thanks.