Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Mycelium: immersed, consisting of brownish hyphae, 4-5 µm in diam., near the perithecia, otherwise inconspicuous, not inducing the formation of galls on the host thallus Perithecia: almost entirely superficial, black, oval to pyriform, 200-280 x 200 µm, rough at the ostiolar region, with many lipid droplets in all parts; wall: dark brown to black around the ostiole, basally 25-30 µm thick, composed of 78 layers of tangentially flattened cells, in the ostiolar region, externally papillose, composed of elongated cells hymenium: hyaline, lining the lower half of the ascomatal cavity hamathecium: present as paraphyses and periphyses paraphyses: hyaline, 3-6.5 µm thick, with some branches or unbranched, with delicate walls, dissolving prior to the maturation of the asci periphyses: numerous, mostly unbranched, forming a distinct crown above the asci, 2-3 µm thick asci: cylindrical to subclavate, 80-95 x 17-23 µm, 8-spored ascospores: hyaline, mostly 1-septate, a few simple and 2-septate spores also present, ellipsoid, with +equal cells and rounded ends, with delicate wall and without a distinct perispore, 18-23(-27) x 8-11 µm, the majority longer than 20 µm Pycnidia: not observed. Host: thallus of Caloplaca nashii, commensalistic Mexico and Sonoran distribution: Mexico, known only from few collections from a single locality in northern Baja California. Notes: The ascospores of L. epinashii are similar in shape and size to Lichenochora constrictella, a species confined to Fulgensia bracteata, but the asci of this taxon are 4spored and the perithecia are immersed in the host thallus.