Caloplaca grimmiae (Nyl.) H. Olivier
Mém. Soc. natn. Sci. nat. Cherbourg 37: 119 (1909).
Basionym: Lecanora grimmiae Nyl., Flora, Regensburg 69: 97 (1886).
Thallus: little or none, without asexual propagules.
Apothecia adnate, 0.3-0.7(-1) mm in diam., lecanorine; disc red or orange or brown, flat, epruinose; margin persistent, flush; thalline margin present, concolorous with thallus; proper margin not visible; parathecium cellular (paraplectenchymatous); exciple below hypothecium prosoplectenchymatous; epihymenium golden, K+ red, H-, 10%N-, cN-, C-; hymenium hyaline, 70-85 µm tall; paraphyses 1-2 tip cells slightly swollen, with some branching; subhymenium hyaline. Asci cylindrical, 8-spored.
Ascospores hyaline, 2 locules, ellipsoid, 11-14 x 5.5-7 µm, isthmus 3-4 µm, spore end wall thin. Pycnidia not observed (Nash et al. 2001: xx)
Photobiont: Data lacking.
Chemistry: Apothecial margin K-, H-, 10% N-, red brown to violet, C-; thallus K-, H-, 10%N-, cN-, C-; unidentified anthraquinones (Nash et al. 2001: xx)
Ecology: On Candelariella over non-calcareous rock