| Common Name | Scientific Name | Code |
| n/a | Caloplaca ahtii Sochting | CAAH |
| n/a | Caloplaca brunneola Wetmore | CABR43 |
| n/a | Caloplaca chlorina (Flotow) H. Olivier | CACH35 |
| n/a | Caloplaca chrysodeta (Vainio ex Rasanen) Dombr. | CACH29 |
| n/a | Caloplaca dakotensis Wetmore | CADA7 |
| n/a | Caloplaca epixantha (Ach.) | CAEP7 |
| n/a | Caloplaca flavogranulosa Arup | CAFL38 |
| n/a | Caloplaca friesii H. Magn. | CAFR21 |
| n/a | Caloplaca gloriae Werner & Llimona | CAGL30 |
| n/a | Caloplaca ignea Arup | CAIG3 |
| n/a | Caloplaca impolita Arup | CAIM4 |
| n/a | Caloplaca inconspecta Arup | CAIN47 |
| n/a | Caloplaca lithophila H. Magn. | CALI19 |
| n/a | Caloplaca lobulata (Florke) de Lesd. | CALO13 |
| n/a | Caloplaca ludificans Arup | CALU25 |
| n/a | Caloplaca luteominia (Tuck.) Zahlbr. var. bolanderi (Tuck.) Arup | CALUB |
| n/a | Caloplaca luteominia (Tuck.) Zahlbr. var. luteominia | CALUL3 |
| n/a | Caloplaca marina (Wedd.) Zahlbr. ssp. americana Arup | CAMAA3 |
| n/a | Caloplaca neotropica Wetmore | CANE29 |
| n/a | Caloplaca oblongula (H. Magn.) Wetmore | CAOB13 |
| n/a | Caloplaca obscurella (Korber) Th. Fr. | CAOB14 |
| n/a | Caloplaca oreicola (Steiner) v.d. Boom & Breuss | CAOR22 |
| n/a | Caloplaca parvula Wetmore | CAPA77 |
| n/a | Caloplaca sonorae Wetmore | CASO11 |
| n/a | Caloplaca stantonii W. A. Weber ex Arup | CAST54 |
| n/a | Caloplaca wetmorei Nimis, Poelt & Tretiach | CAWE3 |
| n/a | Fulgensia bracteata (Hoffm.) Rasanen var. alpina (Th. Fr.) Poelt | FUBRA |
| n/a | Teloschistes californicus Sipman | TECA17 |
| n/a | Xanthoria alaskana J. W. Thomson | XAAL2 |
| n/a | Xanthoria alfredi S. Kondratyuk & Poelt | XAAL3 |
| n/a | Xanthoria borealis R. Sant. & Poelt | XABO |
| n/a | Xanthoria candelaria (L.) Th. Fr. var. finmarkica (Ach.) Hillm. | XACAF |
| n/a | Xanthoria concinna J. W. Thomson & T. Nash | XACO7 |
| n/a | Xanthoria fallax (Hepp) Arnold var. fallax | XAFAF |
| n/a | Xanthoria fulva (Hoffm.) Poelt & Petutschnig | XAFU |
| n/a | Xanthoria ulophyllodes Rasanen | XAUL |
| approximate orange lichen | Caloplaca approximata (Lynge) H. Magn. | CAAP7 |
| arctic teloschistes lichen | Teloschistes arcticus Zahlbr. | TEAR6 |
| Arizona orange lichen | Caloplaca arizonica H. Magn. | CAAR36 |
| boreal orange lichen | Caloplaca borealis (Vainio) Poelt | CABO15 |
| bracted sulphur lichen | Fulgensia bracteata (Hoffm.) Rasanen | FUBR60 |
| Bratt's orange lichen | Caloplaca brattiae W. A. Weber | CABR33 |
| California orange lichen | Caloplaca californica Zahlbr. | CACA60 |
| Caloplaca albovariegata | Pyrenodesmia albovariegata de Lesd. | PYAL4 |
| Caloplaca ammiospila | Caloplaca cinnamomea (Th. Fr.) H. Olivier | CACI14 |
| Caloplaca ammiospila | Caloplaca discoidalis (Vainio) Lynge | CADI32 |
| Caloplaca arenaria | Caloplaca lamprocheila (DC.) Flagey | CALA65 |
| Caloplaca atrosanguinea | Caloplaca herrei Hasse | CAHE28 |
| Caloplaca atrosanguinea | Caloplaca subnigricans H. Magn. | CASU31 |
| Caloplaca aurantia | Caloplaca callopisma (Ach.) Th. Fr. | CACA71 |
| Caloplaca castellana | Caloplaca invadens Lynge | CAIN41 |
| Caloplaca cerina | Caloplaca gilva (Hoffm.) Zahlbr. | CAGI9 |
| Caloplaca cerina | Caloplaca stillicidiorum (Vahl) Lynge | CAST45 |
| Caloplaca chrysodeta | Leproplaca chrysodeta (Vainio ex Rasanen) J. R. Laundon | LECH10 |
| Caloplaca coralloides | Polycaulonia coralloides (Tuck.) Hue | POCO40 |
| Caloplaca diphasia | Blastenia diphasia (Tuck.) Zahlbr. | BLDI2 |
| Caloplaca diphasia | Lecanora diphasia Tuck. | LEDI18 |
| Caloplaca diphyodes | Lecania arctica Lynge | LEAR17 |
| Caloplaca epiphyta | Caloplaca bryochrysion Poelt | CABR35 |
| Caloplaca epixantha | Candelariella epixantha (Ach.) Sandst. | CAEP8 |
| Caloplaca flavorubescens | Caloplaca aurantiaca (Lightf.) Th. Fr. | CAAU18 |
| Caloplaca flavovirescens | Caloplaca erythrella (Ach.) Keiffer | CAER6 |
| Caloplaca floridana | Lecanora floridana Tuck. | LEFL14 |
| Caloplaca holocarpa | Caloplaca pyracea (Ach.) Th. Fr. | CAPY8 |
| Caloplaca lobulata | Xanthoria lobulata (Florke) de Lesd. | XALO |
| Caloplaca luteoalba | Candelariella luteoalba (Turner) Lettau | CALU23 |
| Caloplaca luteominia var. bolanderi | Caloplaca bolanderi (Tuck.) H. Magn. | CABO14 |
| Caloplaca luteominia var. luteominia | Caloplaca laeta H. Magn. | CALA62 |
| Caloplaca montana | Pyrenodesmia montana de Lesd. | PYMO3 |
| Caloplaca novomexicana | Blastenia novomexicana Fink | BLNO |
| Caloplaca oblongula | Apatoplaca oblongula (H. Magn.) Poelt & Hafellner | APOB |
| Caloplaca oblongula | Lecidea oblongula H. Magn. | LEOB6 |
| Caloplaca obscurella | Caloplaca sarcopisioides (Korber) Zahlbr. | CASA22 |
| Caloplaca pelodella | Caloplaca amabilis Zahlbr. | CAAM27 |
| Caloplaca pelodella | Caloplaca arizonica Rud. | CAAR38 |
| Caloplaca pelodella | Pyrenodesmia elaeodes E. D. Rudolph | PYEL3 |
| Caloplaca phaeocarpella | Caloplaca caesiorufella (Nyl.) Zahlbr. | CACA70 |
| Caloplaca rubrofusca | Blastenia rubrofusca de Lesd. | BLRU2 |
| Caloplaca saxicola | Caloplaca discerenda (Nyl.) Zahlbr. | CADI31 |
| Caloplaca saxicola | Caloplaca murorum (Hoffm.) Th. Fr. | CAMU22 |
| Caloplaca sinapisperma | Caloplaca leucoraea (Ach. ex Florke) Branth | CALE45 |
| Caloplaca tiroliensis | Caloplaca subolivacea (Th. Fr.) Lynge | CASU51 |
| Carolina orange lichen | Caloplaca carolinae H. Magn. | CACA63 |
| Cascade orange lichen | Caloplaca cascadensis H. Magn. | CACA64 |
| Catalina orange lichen | Caloplaca catalinae H. Magn. | CACA66 |
| Cephalophysis leucospila | Lecidea ultima Th. Fr. | LEUL2 |
| cephalophysis lichen | Cephalophysis (Hertel) Kilias | CEPHA7 |
| cephalophysis lichen | Cephalophysis leucospila (Anzi) R. Kilias & Scheid. | CELE5 |
| cinnabar orange lichen | Caloplaca cinnabarina (Ach.) Zahlbr. | CACI9 |
| coral orange lichen | Caloplaca coralloides (Tuck.) Hulting | CACO63 |
| desert sulphur lichen | Fulgensia desertorum (Tomin) Poelt | FUDE |
| discolor orange lichen | Caloplaca discolor (Willey) Fink | CADI33 |
| dispersed orange lichen | Caloplaca dispersa de Lesd. | CADI34 |
| Durietz's orange lichen | Caloplaca durietzii Zahlbr. | CADU8 |
| elegant orange wall lichen | Xanthoria elegans (Link) Th. Fr. | XAEL60 |
| elegant orange wall lichen | Xanthoria elegans (Link) Th. Fr. var. splendens (Darbish.) M. S. Christ. ex Poelt | XAELS |
| epiphytic orange lichen | Caloplaca epiphyta Lynge | CAEP4 |
| Florida orange lichen | Caloplaca floridana (Tuck.) S. Tucker | CAFL32 |
| Fulgensia bracteata | Caloplaca bracteata (Hoffm.) Jatta | CABR34 |
| Fulgensia fulgens | Caloplaca fulgens (Sw.) Krober | CAFU7 |
| granulose orange lichen | Caloplaca granulosa (Mull. Arg.) Jatta | CAGR60 |
| Greenland orange lichen | Caloplaca groenlandica Lynge | CAGR28 |
| grimmia orange lichen | Caloplaca grimmiae (Nyl.) H. Olivier | CAGR27 |
| Hasse's orange wall lichen | Xanthoria hasseana Rasanen | XAHA |
| intermediate orange lichen | Caloplaca intermedia (de Lesd.) Zahlbr. | CAIN39 |
| island orange lichen | Caloplaca insularis Poelt | CAIN38 |
| Jungermann's orange lichen | Caloplaca jungermanniae (Vahl) Th. Fr. | CAJU |
| Neon's orange lichen | Caloplaca neonii de Lesd. | CANE16 |
| New Mexico orange lichen | Caloplaca novomexicana (Fink) | CANO5 |
| northern orange lichen | Caloplaca montana (de Lesd.) | CAMO27 |
| orange lichen | Caloplaca adnexa Vezda | CAAD5 |
| orange lichen | Caloplaca alcarum Poelt | CAAL28 |
| orange lichen | Caloplaca ammiospila (Wahlenb.) H. Olivier | CAAM24 |
| orange lichen | Caloplaca atroabla (Tuck.) Zahlbr. | CAAT17 |
| orange lichen | Caloplaca atroflava (Turner) Mong. | CAAT19 |
| orange lichen | Caloplaca atrosanguinea (G. Merr.) Lamb | CAAT20 |
| orange lichen | Caloplaca aurantia (Pers.) Hellbom | CAAU17 |
| orange lichen | Caloplaca bolacina (Tuck.) H. Magn. | CABO13 |
| orange lichen | Caloplaca camptidia (Tuck.) Zahlbr. | CACA62 |
| orange lichen | Caloplaca castellana (Rasanen) Poelt | CACA65 |
| orange lichen | Caloplaca celata Th. Fr. | CACE6 |
| orange lichen | Caloplaca cerina (Ehrh. ex Hedwig) Th. Fr. | CACE7 |
| orange lichen | Caloplaca chrysophthalma Degel. | CACH27 |
| orange lichen | Caloplaca cirrochroa (Ach.) Th. Fr. | CACI10 |
| orange lichen | Caloplaca citrina (Hoffm.) Th. Fr. | CACI11 |
| orange lichen | Caloplaca cladodes (Tuck.) Zahlbr. | CACL6 |
| orange lichen | Caloplaca decipiens (Arnold) Blomb. & Forss. | CADE22 |
| orange lichen | Caloplaca diphasia (Tuck.) Wetmore | CADI29 |
| orange lichen | Caloplaca diphyodes (Nyl.) Jatta | CADI30 |
| orange lichen | Caloplaca epithallina Lynge | CAEP5 |
| orange lichen | Caloplaca eugyra (Tuck.) Zahlbr. | CAEU4 |
| orange lichen | Caloplaca exsecuta (Nyl.) Dalla Torre & Sarnth. | CAEX13 |
| orange lichen | Caloplaca feracissima H. Magn. | CAFE7 |
| orange lichen | Caloplaca ferruginea (Hudson) Th. Fr. | CAFE60 |
| orange lichen | Caloplaca ferrugineofusca (Vainio) H. Magn. | CAFE8 |
| orange lichen | Caloplaca flavorubescens (Hudson) J. R. Laundon | CAFL30 |
| orange lichen | Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnth. | CAFL31 |
| orange lichen | Caloplaca fraudans (Th. Fr.) H. Olivier | CAFR16 |
| orange lichen | Caloplaca fraxinea Lamb | CAFR17 |
| orange lichen | Caloplaca galactophylla (Tuck.) Zahlbr. | CAGA6 |
| orange lichen | Caloplaca herbidella (Hue) H. Magn. | CAHE22 |
| orange lichen | Caloplaca holocarpa (Hoffm. ex Ach.) M. Wade | CAHO19 |
| orange lichen | Caloplaca irrubescens (Arnold) Zahlbr. | CAIR2 |
| orange lichen | Caloplaca lactea (A. Massal.) Zahlbr. | CALA61 |
| orange lichen | Caloplaca litoricola Brodo | CALI17 |
| orange lichen | Caloplaca livida (Hepp) Jatta | CALI18 |
| orange lichen | Caloplaca luteoalba (Turner) Th. Fr. | CALU16 |
| orange lichen | Caloplaca luteominia (Tuck.) Zahlbr. | CALU21 |
| orange lichen | Caloplaca marina (Wedd.) Zahlbr. | CAMA35 |
| orange lichen | Caloplaca microphyllina (Tuck.) Hasse | CAMI38 |
| orange lichen | Caloplaca microthallina (Wedd.) Zahlbr. | CAMI39 |
| orange lichen | Caloplaca modesta (Zahlbr.) Fink | CAMO26 |
| orange lichen | Caloplaca nivalis (Korber) Th. Fr. | CANI12 |
| orange lichen | Caloplaca obliterans (Nyl.) Blomb. & Forss. | CAOB10 |
| orange lichen | Caloplaca peliophylla (Tuck.) Zahlbr. | CAPE28 |
| orange lichen | Caloplaca pelodella (Nyl.) Hasse | CAPE29 |
| orange lichen | Caloplaca phaeocarpella (Nyl.) Zahlbr. | CAPH9 |
| orange lichen | Caloplaca pinicola H. Magn. | CAPI15 |
| orange lichen | Caloplaca quercicola H. Magn. | CAQU7 |
| orange lichen | Caloplaca rubelliana (Ach.) Lojka | CARU17 |
| orange lichen | Caloplaca rubrofusca (de Lesd.) | CARU18 |
| orange lichen | Caloplaca saxicola (Hoffm.) Nordin | CASA23 |
| orange lichen | Caloplaca saxifragarum Poelt | CASA24 |
| orange lichen | Caloplaca scopularis (Nyl.) Lettau | CASC25 |
| orange lichen | Caloplaca sideritis (Tuck.) Zahlbr. | CASI13 |
| orange lichen | Caloplaca sinapisperma (Lam. & DC.) Maheu & A. Gillet | CASI14 |
| orange lichen | Caloplaca sipeana H. Magn. | CASI15 |
| orange lichen | Caloplaca sorocarpa (Vainio) Zahlbr. | CASO6 |
| orange lichen | Caloplaca squamosa (de Lesd.) Zahlbr. | CASQ3 |
| orange lichen | Caloplaca subnitida (Malme) Zahlbr. | CASU38 |
| orange lichen | Caloplaca subpyraceella (Nyl.) Zahlbr. | CASU39 |
| orange lichen | Caloplaca tetraspora (Nyl.) H. Olivier | CATE60 |
| orange lichen | Caloplaca Th. Fr. | CALOP7 |
| orange lichen | Caloplaca tiroliensis Zahlbr. | CATI4 |
| orange lichen | Caloplaca tornoensis H. Magn. | CATO19 |
| orange lichen | Caloplaca trachyphylla (Tuck.) Zahlbr. | CATR22 |
| orange lichen | Caloplaca ulmorum (Fink) Fink | CAUL4 |
| orange lichen | Caloplaca urceolata de Lesd. | CAUR2 |
| orange lichen | Caloplaca velana (A. Massal.) Du Rietz | CAVE16 |
| orange lichen | Caloplaca verrucosa Hasse | CAVE17 |
| orange lichen | Caloplaca verruculifera (Vainio) Zahlbr. | CAVE18 |
| orange lichen | Caloplaca vicaria H. Magn. | CAVI17 |
| orange lichen | Caloplaca vitellinula (Nyl.) H. Olivier | CAVI18 |
| orange lichen | Caloplaca xanthostigmoidea (Rasanen) Zahlbr. | CAXA3 |
| orange wall lichen | Xanthoria (Fr.) Th. Fr. | XANTH9 |
| orange wall lichen | Xanthoria candelaria (L.) Th. Fr. | XACA60 |
| orange wall lichen | Xanthoria fallax (Hepp) Arnold | XAFA |
| orange wall lichen | Xanthoria papillifera (Vainio) Poelt | XAPA |
| orange wall lichen | Xanthoria parietina (L.) Th. Fr. | XAPA2 |
| orange wall lichen | Xanthoria polycarpa (Hoffm.) Rieber | XAPO60 |
| orange wall lichen | Xanthoria ramulosa (Tuck.) Herre | XARA |
| orange wall lichen | Xanthoria sorediata (Vainio) Poelt | XASO60 |
| orange wall lichen | Xanthoria subramulosa Rasanen | XASU5 |
| Oregon orange lichen | Caloplaca oregona H. Magn. | CAOR17 |
| Oxford orange lichen | Caloplaca oxfordensis Fink | CAOX5 |
| Pollin's orange lichen | Caloplaca pollinii (A. Massal.) Jatta | CAPO15 |
| Rose's orange lichen | Caloplaca rosei Hasse | CARO29 |
| sandwort orange lichen | Caloplaca arenaria (Pers.) Mull. Arg. | CAAR35 |
| Schaerer's orange lichen | Caloplaca schaereri (Florke) Zahlbr. | CASC24 |
| Spalding's orange lichen | Caloplaca spaldingii Zahlbr. | CASP21 |
| Spitsberg orange lichen | Caloplaca spitsbergensis H. Magn. | CASP22 |
| Stanford orange lichen | Caloplaca stanfordensis H. Magn. | CAST43 |
| sulphur lichen | Fulgensia A. Massal. & De Not. | FULGE2 |
| sulphur lichen | Fulgensia fulgens (Sw.) Elenkin | FUFU |
| Teloschistes californicus | Teloschistes villosus auct. | TEVI5 |
| teloschistes lichen | Teloschistes chrysophthalmus (L.) Th. Fr. | TECH2 |
| teloschistes lichen | Teloschistes contortuplicatus (Ach.) Clauzade & Rondon ex Vezda | TECO8 |
| teloschistes lichen | Teloschistes exilis (Michaux) Vainio | TEEX2 |
| teloschistes lichen | Teloschistes flavicans (Sw.) Norman | TEFL4 |
| teloschistes lichen | Teloschistes Norman | TELOS |
| Tolmin's orange lichen | Caloplaca tominii Savicz | CATO18 |
| variable orange lichen | Caloplaca variabilis (Pers.) Mull. Arg. | CAVA8 |
| variegated orange lichen | Caloplaca albovariegata (de Lesd.) Wetmore | CAAL26 |
| Wright's orange lichen | Caloplaca wrightii (Willey) Fink | CAWR3 |
| Xanthoria candelaria | Teloschistes candelaris (L.) Fink | TECA14 |
| Xanthoria candelaria | Xanthoria oregana Gyelnik | XAOR2 |
| Xanthoria elegans | Caloplaca elegans (Link) Th. Fr. | CAEL19 |
| Xanthoria elegans var. splendens | Caloplaca splendens (Darbish.) Zahlbr. | CASP26 |
| Xanthoria parietina | Teloschistes parietinus (L.) Norman | TEPA2 |
| Xanthoria polycarpa | Teloschistes polycarpus (Hoffm.) Tuck. | TEPO3 |
| Xanthoria ramulosa | Teloschistes ramulosus Tuck. | TERA3 |
| Xanthoria sorediata | Caloplaca sorediata (Vainio) Du Rietz | CASO7 |