Sclerococcum griseisporodochium  

Thallus thin, grey-mauve or orange-brown from which develop rather evenly spaced, grey soralia-like sporodochia. Although originally described as a lichenicolous fungus, it is now considered to form its own lichenized thallus.
Anamorph: conidiomata sporodochia, I-, arising singly, 0.3-0.8 mm wide; slightly convex to hemispheric, grey-mauve. Conidiophores forming a hyaline layer below the spore mass, simple or sparsely branched, arranged ± parallel to one another, 4-6 µm wide, composed of cylindrical cells with rugose wall, somewhat constricted at the septa. Conidiogenous cells probably holothallic, integrated, terminal, determinate, resembling the conidiophore cells. Conidia arising in chains, tightly adhering to those produced from adjacent conidiogenous cells to form multicellular propagules 21-30 × 12-20 µm, irregular in shape, individual cells mainly distoseptate, thick walled, subglobose to ellipsoidal, brown, HCl+ orange, 1-septate, 12-15 × 7-9 µm, walls ornamented and covered by calcium carbonate crystals, disappearing with HCl.
Teleomorph: not known.
Chemistry: no lichen substances detected by TLC.