in Leavitt, Esslinger, Nelsen & Lumbsch, Lichenologist 45, 4: 559 (2013).

Protolog: Morphologically similar to Oropogon americanus Essl. but differs by having pseudocyphellae that open only to the medulla and not all the way to the hollow thallus centre.

Protolog type data: Mexico, Estado de Oaxaca: c. 65 km (by air) east of Oaxaca City, off Hwy 179 along secondary road to Mixistlan, 17°09'473"N, 96°04'138"W, c. 2640 m elev., remnant oak-madrone cloud forest on mountain ridge, with deforested strip on top of ridge, on bark, Esslinger 18591 (F - holotype; B, DUKE, MEXU, TLE - isotypes).

Type locality: Mexico, Oaxaca, c. 65 km by air east of Oaxaca City, off Hithway 179 along secondary road to Mixistlan, c. remnant oak-madrone cloud forest on mountain ridge, with deforested strip on top of ridge, on bark, 2640 m, Esslinger 18591 (F - holotype; B, DUKE, MEXU, TLE - isotypes).

Type locality coordinates: 17°09'473"N, 96°04'138"W.