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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2311 | Crittendenia absistentis | Diederich, Coppins & Millanes (2022) | Yes | Crittendenia absistentis | 2815 | on Bacidia absistens | NE NR | LF | Crittendenia absistentis | |
| 2312 | Crittendenia coppinsii | (P. Roberts) Diederich, M. Westb., Millanes & Wedin (2021) | Yes | Crittendenia coppinsii | Chionosphaera coppinsii | 2031 | NE NR | LF | Crittendenia coppinsii | |
| 2313 | Crittendenia lecidellae | Diederich, Etayo & Millanes (2022) | Yes | Crittendenia lecidellae | 2816 | on Lecidella elaeochroma | NE NR | LF | Crittendenia lecidellae | |
| 2314 | Crittendenia lichenicola | (Alstrup, B. Sutton & Tønsberg) Diederich, Millanes & Wedin (2021) | Yes | Crittendenia lichenicola | Chionosphaera lichenicola | 2425 | NE NR | LF | Crittendenia lichenicola | |
| 2315 | Crocodia aurata | (Ach.) Link (1833) | Yes | Crocodia aurata | Pseudocyphellaria aurata | 1194 | CR C2 NR P Eng IR | Crocodia aurata | ||
| 2316 | Crocynia aeruginosa | auct. brit. p.p. | No | Botryolepraria lesdainii | 1628 | LC | ||||
| 2317 | Crocynia aeruginosa | auct. brit. p.p. | No | Lepraria incana | 820 | |||||
| 2318 | Crocynia andrewii | B. de Lesd. | No | Lepraria finkii | 1629 | LC | ||||
| 2319 | Crocynia anglica | B. de Lesd. ex Hue | No | application uncertain (type lost) | ||||||
| 2320 | Crocynia caesioalba | B. de Lesd. | No | Lepraria caesioalba | 823 | LC | ||||
| 2321 | Crocynia crassissima | Hue | No | Lepraria crassissima | 819 | LC NR | ||||
| 2322 | Crocynia crassissima | auct. brit. p.max.p. | No | Lepraria nivalis | 1714 | LC NS | ||||
| 2323 | Crocynia creticola | Hue (1924) | No | application uncertain | ||||||
| 2324 | Crocynia declivicola | Hue (1924) | No | application uncertain | ||||||
| 2325 | Crocynia finkii | B. de Lesd. | No | Lepraria finkii | 1629 | LC | ||||
| 2326 | Crocynia flava | (Schreb.) Hue (1924), nom. illeg. | No | Chrysothrix candelaris | 354 | LC | ||||
| 2327 | Crocynia fragilis | B. de Lesd. | No | application uncertain (type lost) | ||||||
| 2328 | Crocynia grevilleana | B. de Lesd. | No | Botryolepraria lesdainii | 1628 | LC | ||||
| 2329 | Crocynia lanuginosa | auct. p.max.p. | No | Lepraria membranacea | 1603 | LC | ||||
| 2330 | Crocynia lanuginosa var. albescens | B. de Lesd. | No | Lepraria membranacea | 1603 | LC | ||||
| 2331 | Crocynia lanuginosa var. inactiva | B. de Lesd. | No | Lepraria membranacea | 1603 | LC | ||||
| 2332 | Crocynia latebrarum | (Ach.) Vain. (1921) | No | Dendrographa latebrarum | 1587 | LC NS Sc | ||||
| 2333 | Crocynia libricola | B. de Lesd. | No | application uncertain | ||||||
| 2334 | Crocynia mollissima | B. de Lesd. | No | Lepraria finkii | 1629 | LC | ||||
| 2335 | Crocynia rigidula | B. de Lesd. | No | Lepraria rigidula | 1715 | LC | ||||
| 2336 | Crocynia saxicola | B. de Lesd. ex Hue | No | application uncertain (type lost) | ||||||
| 2337 | Crocynia saxicola var. inactiva | B. de Lesd. ex Hue | No | application uncertain (type lost) | ||||||
| 2338 | Crocynia scotica | B. de Lesd. ex Hue | No | application uncertain (type lost) | ||||||
| 2339 | Crocynia tephra | Hue | No | ? Lepraria incana | ||||||
| 2340 | Crutarndina petractoides | (P.M. Jørg. & Brodo) Parnmen, Lücking & Lumbsch (2012) | Yes | Crutarndina petractoides | Ocellularia subtilis auct. europ.; Thelotrema petractoides; Thelotrema subtile auct. europ. | 1412 | LC Sc IR | Crutarndina petractoides |