Placopyrenium heppioides (Zahlbr.) Breuss
Taxonomy & Nomenclature
Synonym/s: Dermatocarpon heppioides Zahlbr. (basionym); Catapyrenium heppioides (Zahlbr.) J.W.Thomson
Relocated or rediscovered
Last recorded in 1911 according to (Thomson, 1987), and listed as possibly extinct by NatureServe. However, there appears to be several herbarium records that post-date 1911, leaving it unclear whether the species was rediscovered or is merely rarely collected: https://www.gbif.org/species/2596857/metrics
Los Angeles area, California, USA
Biology & Ecology
Esslinger, T. L. (2018). A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada, Version 22. Opuscula Philolichenum 17: 6-268.
Esslinger, T. L. and Egan, R. S. (1995). A sixth checklist of the lichen-forming, lichenicolous, and allied fungi of the continental United States and Canada. The Bryologist 98(4): 467-549.
Thomson, J. (1987). The lichen genera Catapyrenium and Placidiopsis in North America. The Bryologist 90(1): 27-39.