| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ARGL17 | Arthonia glebosa Tuck. | dot lichen | Arthoniaceae
|
| ARGR15 | Arthonia granosa de Lesd. | dot lichen | Arthoniaceae
|
| ARGR17 | Arthonia gregaria (Weigel) Korber | Arthonia cinnabarina | Arthoniaceae
|
| ARGY2 | Arthonia gyalectoides Mull Arg. | dot lichen | Arthoniaceae
|
| ARHA6 | Arthonia hamamelidis Nyl. | dot lichen | Arthoniaceae
|
| ARHY3 | Arthonia hypobela (Nyl.) Zahlbr. | dot lichen | Arthoniaceae
|
| ARIL2 | Arthonia ilicina Taylor | dot lichen | Arthoniaceae
|
| ARIM2 | Arthonia impallens Nyl. | dot lichen | Arthoniaceae
|
| ARIM3 | Arthonia impolita (Hoffm.) Borrer | Arthonia pruinata | Arthoniaceae
|
| ARIN14 | Arthonia incarnata Fr. ex Almq. | dot lichen | Arthoniaceae
|
| ARIN23 | Arthonia infectans Egea & Torrente | dot lichen | Arthoniaceae
|
| ARIN15 | Arthonia intexta Almq. | dot lichen | Arthoniaceae
|
| ARLA25 | Arthonia lapidicola (Taylor) Branth & Rostrup | dot lichen | Arthoniaceae
|
| ARLE6 | Arthonia lecanactidea Zahlbr. | dot lichen | Arthoniaceae
|
| ARLE7 | Arthonia lecideella Nyl. | dot lichen | Arthoniaceae
|
| ARLE8 | Arthonia leucastraea Tuck. | dot lichen | Arthoniaceae
|
| ARLE9 | Arthonia leucodontis (Poelt & Dobb.) Coppins | Arthonia muscigena | Arthoniaceae
|
| ARLE10 | Arthonia leucopellaea (Ach.) Almq. | dot lichen | Arthoniaceae
|
| ARLU6 | Arthonia lurida Ach. | Arthonia spadicea | Arthoniaceae
|
| ARLU5 | Arthonia luridoalba Nyl. | dot lichen | Arthoniaceae
|
| ARMA32 | Arthonia madreana Egea & Torrente | dot lichen | Arthoniaceae
|
| ARME10 | Arthonia mediella Nyl. | dot lichen | Arthoniaceae
|
| ARME11 | Arthonia melaspora Tuck. | dot lichen | Arthoniaceae
|
| ARMI10 | Arthonia microspermella Willey | dot lichen | Arthoniaceae
|
| ARMU5 | Arthonia muscigena Th. Fr. | dot lichen | Arthoniaceae
|
| ARNE10 | Arthonia neoni de Lesd. | neon dot lichen | Arthoniaceae
|
| ARNE13 | Arthonia nephromiaria (Nyl.) Nyl. ex H. Olivier | dot lichen | Arthoniaceae
|
| AROC3 | Arthonia ochrocincta Willey | dot lichen | Arthoniaceae
|
| AROC4 | Arthonia ochrodiscodes Nyl. | dot lichen | Arthoniaceae
|
| AROC5 | Arthonia ochrolutea Nyl. | dot lichen | Arthoniaceae
|
| ARPA29 | Arthonia palmulacea (Mull. Arg.) R. Sant. | dot lichen | Arthoniaceae
|
| ARPA30 | Arthonia patellulata Nyl. | dot lichen | Arthoniaceae
|
| ARPE19 | Arthonia peltigerina (Almq.) H. Olivier | dot lichen | Arthoniaceae
|
| ARPE15 | Arthonia perminuta Willey | dot lichen | Arthoniaceae
|
| ARPH2 | Arthonia phaeobaea (Norman) Norman | dot lichen | Arthoniaceae
|
| ARPI4 | Arthonia pinastri Anzi | dot lichen | Arthoniaceae
|
| ARPL7 | Arthonia platygraphidea Nyl. | dot lichen | Arthoniaceae
|
| ARPL8 | Arthonia platyspilea Nyl. | dot lichen | Arthoniaceae
|
| ARPO11 | Arthonia polygramma Nyl. | dot lichen | Arthoniaceae
|
| ARPO12 | Arthonia polymorpha Ach. | dot lichen | Arthoniaceae
|
| ARPR12 | Arthonia pruinata (Pers.) A. L. Sm. | dot lichen | Arthoniaceae
|
| ARPR8 | Arthonia pruinosella Nyl. | dot lichen | Arthoniaceae
|
| ARPR9 | Arthonia pruinosula Nyl. | dot lichen | Arthoniaceae
|
| ARPU19 | Arthonia punctiformis Ach. | dot lichen | Arthoniaceae
|
| ARPY5 | Arthonia pyrrhula Nyl. | dot lichen | Arthoniaceae
|
| ARPY6 | Arthonia pyrrhuliza Nyl. | dot lichen | Arthoniaceae
|
| ARQU2 | Arthonia quintaria Nyl. | dot lichen | Arthoniaceae
|
| ARRA4 | Arthonia radiata (Pers.) Ach. | dot lichen | Arthoniaceae
|
| ARRA5 | Arthonia ravenelii Tuck. | Ravenel's dot lichen | Arthoniaceae
|
| ARRE13 | Arthonia reniformis (Pers.) Ach. | kidneyshape dot lichen | Arthoniaceae
|
| ARRH4 | Arthonia rhoidis Zahlbr. | dot lichen | Arthoniaceae
|
| ARRU8 | Arthonia rubella (Fee) Nyl. | dot lichen | Arthoniaceae
|
| ARRU9 | Arthonia rupicola Fink | dot lichen | Arthoniaceae
|
| ARSE16 | Arthonia sexlocularis Zahlbr. | dot lichen | Arthoniaceae
|
| ARSI7 | Arthonia siderea Degel. | dot lichen | Arthoniaceae
|
| ARSP10 | Arthonia spadicea Leighton | dot lichen | Arthoniaceae
|
| ARST14 | Arthonia stellaris Krempelh. | dot lichen | Arthoniaceae
|
| ARST11 | Arthonia stictella Stizenb. | dot lichen | Arthoniaceae
|
| ARSU13 | Arthonia subastroidella Nyl. | dot lichen | Arthoniaceae
|
| ARSU14 | Arthonia subdiffusa Willey | dot lichen | Arthoniaceae
|
| ARSU15 | Arthonia subdispuncta Nyl. | dot lichen | Arthoniaceae
|
| ARSU24 | Arthonia subfusicola (Lindsay) Triebel | dot lichen | Arthoniaceae
|
| ARSU16 | Arthonia subminutissima Nyl. | dot lichen | Arthoniaceae
|
| ARSU17 | Arthonia subminutula Nyl. | dot lichen | Arthoniaceae
|
| ARSU18 | Arthonia subrubella Nyl. | dot lichen | Arthoniaceae
|
| ARTA | Arthonia taedescens Nyl. | dot lichen | Arthoniaceae
|
| ARTE10 | Arthonia terrigena Nyl. | dot lichen | Arthoniaceae
|
| ARTE11 | Arthonia tetramera (Stizenb.) Hasse | dot lichen | Arthoniaceae
|
| ARTO6 | Arthonia torulosa Fee | dot lichen | Arthoniaceae
|
| ARTU2 | Arthonia tuckermaniana Willey | Tuckerman's dot lichen | Arthoniaceae
|
| ARTU3 | Arthonia tumidula (Ach.) Ach. | Arthonia cinnabarina | Arthoniaceae
|
| ARVA3 | Arthonia varia (Ach.) Nyl. | dot lichen | Arthoniaceae
|
| ARVE5 | Arthonia vernans Willey | dot lichen | Arthoniaceae
|
| ARVI20 | Arthonia vinosa Leighton | dot lichen | Arthoniaceae
|
| ARVI14 | Arthonia viridicans Willey | dot lichen | Arthoniaceae
|
| ARWI2 | Arthonia willeyi Tuck. | Willey's dot lichen | Arthoniaceae
|
| ARXY | Arthonia xylographica Nyl. | dot lichen | Arthoniaceae
|
| ARTHO | Arthonia Ach. | dot lichen | Arthoniaceae
|
| ARAF3 | Arthopyrenia affinis (A. Massal.) R. C Harris | Strigula jamesii | Strigulaceae
|
| ARAL21 | Arthopyrenia alba (Schrader) Zahlbr. | Acrocordia gemmata | Monoblastiaceae
|
| ARAM5 | Arthopyrenia ambigua Zahlbr. | Anisomeridium ambiguum | Monoblastiaceae
|
| ARAN13 | Arthopyrenia anacardii Vainio | Anisomeridium terminatum | Monoblastiaceae
|
| ARAN14 | Arthopyrenia analepta (Ach.) A. Massal. | shell lichen | Arthopyreniaceae
|
| ARAN11 | Arthopyrenia antecellens (Nyl.) Arnold | Mycoporum antecellens | Mycoporaceae
|
| ARBI10 | Arthopyrenia bifera Zahlbr. | Arthopyrenia malaccitula | Arthopyreniaceae
|
| ARBI11 | Arthopyrenia biformis (Borrer) A. Massal. | Anisomeridium biforme | Monoblastiaceae
|
| ARCA39 | Arthopyrenia carthiniaca J. Steiner | Anisomeridium carthiniacum | Monoblastiaceae
|
| ARCA40 | Arthopyrenia cavata (Ach.) R. C. Harris | Acrocordia cavata | Monoblastiaceae
|
| ARCE2 | Arthopyrenia cerasi (Schrader) A. Massal. | shell lichen | Arthopyreniaceae
|
| ARCI5 | Arthopyrenia cinchonae (Ach.) Mull. Arg. | shell lichen | Arthopyreniaceae
|
| ARCI6 | Arthopyrenia cinereopruinosa (Schaerer) A. Massal. | shell lichen | Arthopyreniaceae
|
| ARCO35 | Arthopyrenia confluens R. C. Harris | shell lichen | Arthopyreniaceae
|
| ARCO30 | Arthopyrenia conformis (Nyl.) Mull. Arg. | Anisomeridium biforme | Monoblastiaceae
|
| ARCO31 | Arthopyrenia conoidea (Fr.) Zahlbr. | Acrocordia conoidea | Monoblastiaceae
|
| ARDE10 | Arthopyrenia degelii R. C. Harris | shell lichen | Arthopyreniaceae
|
| ARDI23 | Arthopyrenia dimidiata Fink | Anisomeridium carthiniacum | Monoblastiaceae
|
| ARDI24 | Arthopyrenia distans (Willey) Zahlbr. | Anisomeridium distans | Monoblastiaceae
|
| ARES6 | Arthopyrenia esenbeckiana (Fee) R. C. Harris | shell lichen | Arthopyreniaceae
|
| AREX5 | Arthopyrenia exasperata R. C. Harris | shell lichen | Arthopyreniaceae
|
| ARFA5 | Arthopyrenia faginea (Schaerer) Swinscow | Strigula stigmatella | Strigulaceae
|
| ARFA6 | Arthopyrenia fallax (Nyl.) Arnold | Arthopyrenia analepta | Arthopyreniaceae
|