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= sarcographa cascarillae fe ; essai sur les cryptogams des corces exotiques officinales : 58 ( 1825 ) .
thallus epiphloeodal , thin , effuse , smooth , glossy to matt , yellowish to greenish - grey or greyish - brown , ecorticate ; medulla containing many oxalate crystals ( fig .
stroma whitish to cream coloured , farinose to granular , roundish to elliptical , often confluent , up to 3 mm in diameter , 0.2~0.3 mm thick , bordered by a white prothallus .
apothecia ( lirellae ) black , slightly immersed in the stroma , irregularly branched or radiate , forming a network , branches 0.15 mm wide , the ends of branches somewhat acute ; disc concave ; exciple black , closed , divergent ; hypothecium carbonised ; hymenium 40~85 m high , inspersed with oil globules ; ascospores 8 per ascus , pale brown to brown , transversely 3 septate , 4-locular , 15~25  5~7 m , old spores with a darker membrane .
the species growing on the bark of camellia japonica and eurya emarginata along the coastal line of geomun island is a new record for korean lichen flora ( fig .
this is the first time that this genus was reported to exist in south korea .
outside south korea , this species has been found in japan ( nakanishi , 1966 ) , sri lanka ( awasthi , 1991 ; nakanishi , 1966 ) and south america ( staiger , 2002 ) .
the species is characterised by a whitish stroma that is surrounded by a whitish prothallus and pale brown 4-locular spores .
mll . arg . in external morphology , but the latter differs in having 4~6 locular spores and carbonisation of the exciple , which spreads to the adjacent parts of the stroma .
while s. tricosa strictly has 4-locular spores and only the exciples of the lirellae are carbonised ; adjacent parts of the stroma are not carbonised .
52 m , on bark ( camellia japonica ) , hur 070136 , 24.03.2007 ; on bark ( eurya emarginata ) , hur 070137 ; on bark , hur 070139 ; geomun island , n3400'35.9 " e12719'12.2 " , alt .
thallus epiphloeodal , thin , effuse , smooth , glossy to matt , yellowish to greenish - grey or greyish - brown , ecorticate ; medulla containing many oxalate crystals ( fig .
stroma whitish to cream coloured , farinose to granular , roundish to elliptical , often confluent , up to 3 mm in diameter , 0.2~0.3 mm thick , bordered by a white prothallus .
apothecia ( lirellae ) black , slightly immersed in the stroma , irregularly branched or radiate , forming a network , branches 0.15 mm wide , the ends of branches somewhat acute ; disc concave ; exciple black , closed , divergent ; hypothecium carbonised ; hymenium 40~85 m high , inspersed with oil globules ; ascospores 8 per ascus , pale brown to brown , transversely 3 septate , 4-locular , 15~25  5~7 m , old spores with a darker membrane .
the species growing on the bark of camellia japonica and eurya emarginata along the coastal line of geomun island is a new record for korean lichen flora ( fig .
this is the first time that this genus was reported to exist in south korea .
outside south korea , this species has been found in japan ( nakanishi , 1966 ) , sri lanka ( awasthi , 1991 ; nakanishi , 1966 ) and south america ( staiger , 2002 ) .
the species is characterised by a whitish stroma that is surrounded by a whitish prothallus and pale brown 4-locular spores .
mll . arg . in external morphology , but the latter differs in having 4~6 locular spores and carbonisation of the exciple , which spreads to the adjacent parts of the stroma .
while s. tricosa strictly has 4-locular spores and only the exciples of the lirellae are carbonised ; adjacent parts of the stroma are not carbonised .
52 m , on bark ( camellia japonica ) , hur 070136 , 24.03.2007 ; on bark ( eurya emarginata ) , hur 070137 ; on bark , hur 070139 ; geomun island , n3400'35.9 " e12719'12.2 " , alt .
lichen genus sarcographa fee , a stromatoid graphidacean taxa , was newly found in geomun island , jeonnam province . 
 the lichen grew on the bark of camellia japonica and eurya emarginata along the coastal line of the island . 
 it was identified as sarcographa tricosa ( ach . ) 
 mll . arg . for the first time in korea .