| Common Name | Scientific Name | Code |
| n/a | Distopyrenis americana Aptroot | DIAM6 |
| n/a | Distopyrenis Aptroot | DISTO |
| n/a | Distopyrenis pachyospora Aptroot | DIPA28 |
| n/a | Distopyrenis quercicola R. C. Harris | DIQU3 |
| n/a | Distopyrenis submuriformis R. C. Harris | DISU9 |
| n/a | Granulopyrenis Aptroot | GRANU |
| n/a | Granulopyrenis hymnothora (Ach.) Aptroot | GRHY2 |
| n/a | Lithothelium hyalosporum (Nyl.) Aptroot | LIHY2 |
| n/a | Lithothelium illotum (Nyl.) Aptroot | LIIL |
| n/a | Lithothelium macrosporum (R. C. Harris) Aptroot | LIMA16 |
| n/a | Lithothelium microsporum R. C. Harris | LIMI15 |
| n/a | Lithothelium Mull. Arg. | LITHO6 |
| n/a | Lithothelium phaeosporum (R. C. Harris) Aptroot | LIPH5 |
| n/a | Lithothelium septemseptatum (R. C. Harris) Aptroot | LISE8 |
| n/a | Pyrenocollema atlanticum (Vainio) R. C. Harris | PYAT |
| n/a | Pyrenocollema elegans R. Sant. | PYEL4 |
| n/a | Pyrenocollema sublitorale (Leighton) R. C. Harris ex Fletcher | PYSU8 |
| n/a | Pyrenula acutispora Kalb & Hafellner | PYAC3 |
| n/a | Pyrenula atrolaminata R. C. Harris | PYAT2 |
| n/a | Pyrenula caryae R. C. Harris | PYCA9 |
| n/a | Pyrenula laetior Mull. Arg. | PYLA5 |
| n/a | Pyrenula mamillana (Ach.) Trevisan | PYMA9 |
| n/a | Pyrenula mucosa (Vainio) R. C. Harris | PYMU4 |
| n/a | Pyrenula nitidula (Bresadola) R. C. Harris | PYNI3 |
| n/a | Pyrenula personata (Malme) R. C. Harris | PYPE2 |
| n/a | Pyrenula wetmorei R. C. Harris | PYWE |
| n/a | Pyrenula wheeleri R. C. Harris | PYWH |
| n/a | Requienella Fabre | REQUI |
| n/a | Requienella seminuda (Pers.:Fr.) Boise | RESE2 |
| n/a | Requienella subcollapsa (Ellis & Everhart) R. C. Harris | RESU2 |
| anthracothecium lichen | Anthracothecium canellae-albae (Fee) Mull. Arg. | ANCA35 |
| anthracothecium lichen | Anthracothecium Hampe ex A. Massal. | ANTHR2 |
| anthracothecium lichen | Anthracothecium nanum (Zahlbr.) R. C. Harris | ANNA3 |
| anthracothecium lichen | Anthracothecium prasinum (Eschw.) R. C. Harris | ANPR4 |
| anthracothecium lichen | Anthracothecium staurosporum (Tuck. ex Willey) Zahlbr. | ANST9 |
| anthracothecium lichen | Anthracothecium subglobosum Riddle | ANSU9 |
| anthracothecium lichen | Anthracothecium varians R. C. Harris | ANVA |
| Anthracothecium nanum | Parmentaria nana (Zahlbr.) R. C. Harris | PANA5 |
| Anthracothecium nanum | Pleurotheliopsis australiensis (Mull. Arg.) Zahlbr. | PLAU9 |
| Anthracothecium nanum | Pleurotheliopsis nana Zahlbr. | PLNA |
| Cuban wart lichen | Pyrenula cubana (Mull. Arg.) R. C. Harris | PYCU3 |
| Granulopyrenis hymnothora | Sphaeria bignoniae Schwein. | SPBI3 |
| Granulopyrenis hymnothora | Verrucaria hymnothora Ach. | VEHY4 |
| Javan pyrgillus lichen | Pyrgillus javanicus (Mont. & v. d. Bosch) Nyl. | PYJA2 |
| Lithothelium hyalosporum | Arthopyrenia hyalospora (Nyl.) Fink | ARHY4 |
| Lithothelium hyalosporum | Plagiocarpa hyalospora (Nyl.) R. C. Harris | PLHY6 |
| Lithothelium hyalosporum | Pleurotrema solivagum Degel. | PLSO |
| Lithothelium illotum | Plagiocarpa illota (Nyl.) R. C. Harris | PLIL |
| Lithothelium illotum | Plagiocarpa langloisii R. C. Harris | PLLA7 |
| Lithothelium macrosporum | Plagiocarpa macrospora R. C. Harris | PLMA10 |
| Lithothelium phaeosporum | Plagiocarpa phaeospora R. C. Harris | PLPH |
| Lithothelium septemseptatum | Plagiocarpa septemseptata R. C. Harris | PLSE4 |
| Macoun's wart lichen | Pyrenula macounii R. C. Harris | PYMA3 |
| Michener's wart lichen | Pyrenula micheneri R. C. Harris | PYMI5 |
| Plitt's wart lichen | Pyrenula plittii R. C. Harris | PYPL2 |
| Pyrenocollema halodytes | Arthopyrenia halodytes (Nyl.) Arnold | ARHA8 |
| pyrenocollema lichen | Pyrenocollema caesium (Nyl.) R. C. Harris | PYCA7 |
| pyrenocollema lichen | Pyrenocollema halodytes (Nyl.) R. C. Harris | PYHA |
| pyrenocollema lichen | Pyrenocollema prospersellum (Nyl.) R. C. Harris | PYPR2 |
| pyrenocollema lichen | Pyrenocollema Reinke | PYREN2 |
| pyrenocollema lichen | Pyrenocollema strontianensis (Swinscow) R. C. Harris | PYST |
| pyrenocollema lichen | Pyrenocollema tichothecioides (Arnold) R. C. Harris | PYTI |
| Pyrenocollema prospersellum | Arthopyrenia prospersella (Nyl.) Zahlbr. | ARPR11 |
| Pyrenocollema sublitorale | Arthopyrenia sublitoralis (Leighton) Arnold | ARSU20 |
| Pyrenocollema tichothecioides | Arthopyrenia tichothecioides Arnold | ARTI3 |
| Pyrenula anomala | Melanotheca achariana Fee | MEAC3 |
| Pyrenula anomala | Melanotheca anomala (Ach.) A. Massal. | MEAN6 |
| Pyrenula astroidea | Parmentaria astroidea Fee | PAAS6 |
| Pyrenula concatervans | Melanotheca cinerata Zahlbr. | MECI11 |
| Pyrenula concatervans | Melanotheca concatervans (Nyl.) Zahlbr. | MECO14 |
| Pyrenula concatervans | Pyrenula bahiana Malme | PYBA4 |
| Pyrenula corticata | Anthracothecium corticatum Mull. Arg. | ANCO33 |
| Pyrenula cruenta | Melanotheca cruenta (Mont.) Mull. Arg. | MECR9 |
| Pyrenula cruenta | Melanotheca subincruenta (Nyl.) Zahlbr. | MESU11 |
| Pyrenula cruentata | Bottaria cruentata Mull. Arg. | BOCR4 |
| Pyrenula cubana | Pyrenastrum cubanum Mull. Arg. | PYCU4 |
| Pyrenula cuyabensis | Parathelium cuyabense Malme | PACU4 |
| Pyrenula erumpens | Parathelium emergens Nyl. ex Mull. Arg. | PAEM |
| Pyrenula falsaria | Anthracothecium falsarium Zahlbr. | ANFA5 |
| Pyrenula laevigata | Pyrenula glabrata (Ach.) A. Massal. | PYGL2 |
| Pyrenula leucostoma | Anthracothecium leucostomum (Ach.) Malme | ANLE12 |
| Pyrenula leucostoma | Parmentaria rappii Zahlbr. | PARA17 |
| Pyrenula macularis | Anthracothecium maculare Zahlbr. | ANMA16 |
| Pyrenula maculata | Pyrenula nitidella (Florke ex Schaerer) Mull. Arg. var. maculata R. C. Harris | PYNIM |
| Pyrenula mamillana | Pyrenula marginata Hook. | PYMA6 |
| Pyrenula mamillana | Pyrenula xyloides (Eschw.) Mull. Arg. | PYXY |
| Pyrenula martinicana | Parathelium martinicanum Vainio | PAMA22 |
| Pyrenula microcarpa | Pyrenula cinerea Zahlbr. | PYCI2 |
| Pyrenula microcarpa | Pyrenula texana Tuck. ex R. C. Harris | PYTE3 |
| Pyrenula microtheca | Parathelium microcarpum Riddle | PAMI16 |
| Pyrenula ochraceoflava | Anthracothecium ochraceoflavum (Nyl.) Mull. Arg. | ANOC10 |
| Pyrenula ochraceoflavens | Anthracothecium ochraceoflavens (Nyl.) Zahlbr. | ANOC9 |
| Pyrenula personata | Pyrenula fulvella R. C. Harris | PYFU4 |
| Pyrenula pseudobufonia | Pyrenula neglecta R. C. Harris | PYNE |
| Pyrenula pyrenuloides | Anthracothecium pyrenuloides (Mont.) Mull. Arg. | ANPY4 |
| Pyrenula ravenelii | Parmentaria ravenelii (Tuck.) Mull. Arg. | PARA18 |
| Pyrenula septicollaris | Pyrenastrum fuscum Mont. | PYFU5 |
| Pyrenula septicollaris | Pyrenastrum pyrenastraeum (Nyl.) Zahlbr. | PYPY4 |
| Pyrenula subelliptica | Pyrenula imperfecta (Ellis & Everh.) R. C. Harris | PYIM |
| Pyrenula subferruginea | Parathelium subferrugineum Malme | PASU12 |
| Pyrenula thelomorpha | Anthracothecium thelomorphum (Tuck.) Zahlbr. | ANTH6 |
| Pyrgillus javanicus | Pyrgillus americanus Nyl. | PYAM3 |
| pyrgillus lichen | Pyrgillus Nyl. | PYRGI |
| Ravenel's wart lichen | Pyrenula ravenelii (Tuck.) R. C. Harris | PYRA4 |
| wart lichen | Pyrenula Ach. | PYREN5 |
| wart lichen | Pyrenula acutalis R. C. Harris | PYAC |
| wart lichen | Pyrenula anomala (Ach.) Vainio | PYAN3 |
| wart lichen | Pyrenula aquila R. C. Harris | PYAQ |
| wart lichen | Pyrenula aspistea (Ach.) Ach. | PYAS2 |
| wart lichen | Pyrenula astroidea (Fee) R. C. Harris | PYAS3 |
| wart lichen | Pyrenula cerina Eschw. | PYCE |
| wart lichen | Pyrenula citriformis R. C. Harris | PYCI |
| wart lichen | Pyrenula cocoes Mull. Arg. | PYCO9 |
| wart lichen | Pyrenula concatervans (Nyl.) R. C. Harris | PYCO10 |
| wart lichen | Pyrenula confoederata R. C. Harris | PYCO11 |
| wart lichen | Pyrenula corticata (Mull. Arg.) R. C. Harris | PYCO12 |
| wart lichen | Pyrenula cruenta (Mont.) Vainio | PYCR3 |
| wart lichen | Pyrenula cruentata (Mull. Arg.) R. C. Harris | PYCR4 |
| wart lichen | Pyrenula cuyabensis (Malme) R. C. Harris | PYCU2 |
| wart lichen | Pyrenula erumpens R. C. Harris | PYER |
| wart lichen | Pyrenula falsaria (Zahlbr.) R. C. Harris | PYFA2 |
| wart lichen | Pyrenula laevigata (Pers.) Arnold | PYLA4 |
| wart lichen | Pyrenula leucostoma Ach. | PYLE3 |
| wart lichen | Pyrenula lucifera R. C. Harris | PYLU3 |
| wart lichen | Pyrenula macularis (Zahlbr.) R. C. Harris | PYMA4 |
| wart lichen | Pyrenula maculata (R. C. Harris) R. C. Harris | PYMA5 |
| wart lichen | Pyrenula martinicana (Vainio) R. C. Harris | PYMA7 |
| wart lichen | Pyrenula microcarpa Mull. Arg. | PYMI6 |
| wart lichen | Pyrenula microtheca R. C. Harris | PYMI7 |
| wart lichen | Pyrenula ochraceoflava (Nyl.) R. C. Harris | PYOC3 |
| wart lichen | Pyrenula ochraceoflavens (Nyl.) R. C. Harris | PYOC4 |
| wart lichen | Pyrenula oleosa R. C. Harris | PYOL |
| wart lichen | Pyrenula pseudobufonia (Rehm) R. C. Harris | PYPS |
| wart lichen | Pyrenula punctella (Nyl.) Trevisan | PYPU4 |
| wart lichen | Pyrenula pyrenuloides (Mont.) R. C. Harris | PYPY3 |
| wart lichen | Pyrenula quassiaecola Fee | PYQU |
| wart lichen | Pyrenula rubrostoma R. C. Harris | PYRU2 |
| wart lichen | Pyrenula santensis (Eschw.) Mull. Arg. | PYSA3 |
| wart lichen | Pyrenula septicollaris (Eschw.) R. C. Harris | PYSE6 |
| wart lichen | Pyrenula subelliptica (Tuck.) R. C. Harris | PYSU4 |
| wart lichen | Pyrenula subferruginea (Malme) R. C. Harris | PYSU5 |
| wart lichen | Pyrenula tenuisepta R. C. Harris | PYTE2 |
| wart lichen | Pyrenula thelomorpha Tuck. | PYTH |
| western wart lichen | Pyrenula occidentalis (R. C. Harris) R. C. Harris | PYOC2 |