For more information see the Supplementary Notes for the Taxon Dictionary, which explains the names and synonyms, and these Instructions on how to use the online Taxon Dictionary which includes details of the Conservation Evaluation codes.
| Count | Name | Authority | Is Current Name? | Current Taxon Name | Synonyms | BLS Number | Comments | Conservation Evaluation | Group | Account & Map |
|---|---|---|---|---|---|---|---|---|---|---|
| 3121 | Isidium lutescens | (Hoffm.) Turner & Borrer (1812) | No | Pertusaria flavida | 1073 | LC | ||||
| 3122 | Isidium paradoxum | Turner & Borrer ex Hook. | No | Pertusaria sp. | Pertusaria ? corallina | |||||
| 3123 | Isidium phragmaeum | (Ach.) Chev. | No | Pertusaria flavida | 1073 | LC | ||||
| 3124 | Isidium phymatodes var. phragmaeum | Ach. | No | Pertusaria flavida | 1073 | LC | ||||
| 3125 | Ivanpisutia ocelliformis | (Nyl.) S.Y Kondr. (2019) | No | Biatora ocelliformis | 2567 | NE NR | ||||
| 3126 | Jamesiella anastomosans | (P. James & Vězda) Lücking, Sérus. & Vězda (2005) | Yes | Jamesiella anastomosans | Gyalideopsis anastomosans | 547 | LC | Jamesiella anastomosans | ||
| 3127 | Jamesiella scotica | (P. James) Lücking, Sérus. & Vězda (2005) | Yes | Jamesiella scotica | Gyalideopsis scotica | 549 | NT NS E P Sc IR | Jamesiella scotica | ||
| 3128 | Japewia carrollii | (Coppins & P. James) Tønsberg | No | Japewiella tavaresiana | 708 | LC | ||||
| 3129 | Japewia subaurifera | Muhr & Tønsberg (1990) | Yes | Japewia subaurifera | 1758 | LC NS | Japewia subaurifera | |||
| 3130 | Japewia tornoënsis | (Nyl.) Tønsberg (1990) | No | Japewia tornoensis | 786 | orth. var. | VU D2 NR Sc | |||
| 3131 | Japewia tornoensis | (Nyl.) Tønsberg (1990) | Yes | Japewia tornoensis | Lecidea tornoënsis; Mycoblastus tornoënsis | 786 | VU D2 NR Sc | Japewia tornoënsis | ||
| 3132 | Japewiella carrollii | (Coppins & P. James) Printzen | No | Japewiella tavaresiana | 708 | LC | ||||
| 3133 | Japewiella tavaresiana | (H. Magn.) Printzen (2000) | Yes | Japewiella tavaresiana | Japewia carrollii Japewiella carrollii Lecidea carrollii Lecidea tenbricosa auct. p.p. |
708 | LC | Japewiella tavaresiana | ||
| 3134 | Johnsheardia cinnamomea | (Th. Fr.) S. Y. Kondr., I. Kärnefelt & A.Thell (2021) | No | Rinodina cinnamomea | 1804 | EN D NR Sc | ||||
| 3135 | Julella sericea | (A. Massal.) Coppins (1992) | Yes | Julella sericea | Microglaena sericea Polyblastiopsis sericea |
1945 | LC NR | F | Julella sericea | |
| 3136 | Kalaallia reactiva | Alstrup & D. Hawksw. (1990) | No | Opegrapha reactiva | 2075 | LC NR | LF | |||
| 3137 | Kalchbrenneriella cyanescens | (Kalchbr.) Diederich & M.S. Christ. (2002) | Yes | Kalchbrenneriella cyanescens | Torula cyanescens | 2329 | LC | LF | Kalchbrenneriella cyanescens | |
| 3138 | Karschia adjuncta | (Th. Fr.) Arnold | No | Buellia adjuncta | Buellia adjuncta Th. Fr., incorrectly reported from the British Isles | LF | ||||
| 3139 | Karschia adjuncta | sensu Walt. Watson, non (Th. Fr.) Arnold | No | Buellia pulverea | 211 | LC NS | ||||
| 3140 | Karschia advenula | (Leight.) Zopf | No | Rhizocarpon advenulum | 1956 | NE NR Sc | LF | |||
| 3141 | Karschia athallina | (Müll. Arg.) Vouaux (1892) | No | Sclerococcum athallinum | 2042 | NE NR | LF | |||
| 3142 | Karschia bloxamii | (Berk.) Sacc. | No | Dactylospora bloxamii | Dactylospora bloxamii (Berk.) Hafellner | F | ||||
| 3143 | Karschia destructans | Tobler | No | Buellia schaereri | 215 | LC | ||||
| 3144 | Karschia epiphorbia | (Stirt.) Zopf (1896 | No | Arthonia peltigerea | 1935 | Needs conf. if type can be traced | NE NR | LF | ||
| 3145 | Karschia lignyota | (Fr.) Sacc. | No | Rhizodiscina lignyota | Rhizodiscina lignyota (Fr.) Hafellner | F | ||||
| 3146 | Karschia pulverulenta | (Anzi) Körb. (1865) | No | Tetramelas pulverulentus | 1855 | NE NR Sc | ||||
| 3147 | Karschia saxatilis | (Schaer.) Rehm (1890) | No | Sclerococcum saxatile | 2050 | NE NR | LF | |||
| 3148 | Karschia scabrosa | (Ach.) Rehm | No | Epilichen scabrosus | 510 | LC NS M* | LF | |||
| 3149 | Karschia stygia | (Berk & M.A. Curtis) Massee | No | Dactylospora stygia | Dactylospora stygia (Berk. & M.A. Curtis) Hafellner | F | ||||
| 3150 | Karschia talcophila | (Ach. ex Flot.) Körb. | No | incorrectly reported from the British Isles | LF |