Table 3 in Taxonomy of Buellia epigaea - group (Caliciales, Caliciaceae), revealing a new species and two new records from China

Table 3. Key characteristics of the Buellia epigaea -group.
SpeciesThallusApotheciaExcipleSporesOrnamentation of sporesMajor chemistryPycnidiaParasitic fungiB. alpinaeffigurate, lobes linear, closely aggregate; covered with granulose pruinaflat, margin wavy and irregulardispersa -typeCallispora -type; four-sporeddensely rugulate, resulting in rough surfaceatranorinnot seennot seenB. asterellaeffigurate, lobes short and connected; surface with fine pruinaconvexBuellia aethalea -typeBuellia -type; often four well developed sporesmicrofoveateatranorin, stictic acid, norstictic acidrarenot seenB. dijiananot effigurate, crustose to granulose-squamulose; surface with fine pruina; dispersivesoon irregularly convexBuellia aethalea -typeBuellia -typewarty, microrugulatearthothelinfiliform conidiarareB. eleganseffigurate, lobes short to slender, multi-forked; covered with granulose pruinaflat to convexdispersa -typeBuellia -typeLoosely rugulate, resulting in rough surfacea) atranorin; b) atranorin and 2'-O-methylperlatoric (in Asia)not seencommonB. epigaeanot effigurate, crusty, uneven to wrinkled; surface with fine pruinaflatBuellia aethalea -typeCallispora -typesurface densely areolate and roughno secondary metaboliterarerareB. georgeieffigurate, marginal lobes short and often forming rosettes; surface with white granulose pruinaflat or sometimes slightly convexBuellia aethalea -typeBuellia -typesurface densely areolate and rougharthothelinfiliform conidiacommonB. lobataeffigurate, marginal lobes distinct but short, the tips of lobes dark; surface with lightly fine pruinaapothecia disc below marginBuellia aethalea -typeBuellia -type; often four well developed sporeswarty, microrugulatearthothelin, thuringionefiliform conidiacommonB. zoharyieffigurate, lobes obvious; covered with granulose pruinaflat to convexdispersa -typeBuellia -typemicrofoveateatranorin, norstictic acid, stictic acidcommonrare