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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4291 | Lecidea perluta | Nyl. (1876) | No | Rhizocarpon petraeum | 1249 | LC | ||||
| 4292 | Lecidea pernigra | Hertel | No | Lecidea promixta | 760 | DD NR | ||||
| 4293 | Lecidea perobscura | Nyl. | No | Lecanora symmicta | 688 | Lecanora symmicta s. lat. | LC | |||
| 4294 | Lecidea pertingens | Nyl. (1874) | No | Lecidella carpathica | 796 | NS | ||||
| 4295 | Lecidea perustula | Nyl. | No | Clauzadeana macula | 746 | LC NS | ||||
| 4296 | Lecidea petraea | (Wulfen) Ach. (1803) | No | Rhizocarpon petraeum | 1249 | LC | ||||
| 4297 | Lecidea petrosa | Arnold | No | Farnoldia jurana | 863 | LC NS | ||||
| 4298 | Lecidea phaeenterodes | Nyl. | No | Porpidia rugosa | 566 | LC | ||||
| 4299 | Lecidea phaeophysata | Fryday, van den Boom & M. Brand (2019) | Yes | Lecidea phaeophysata | 2744 | So far known only from Ireland | NE | Lecidea phaeophysata | ||
| 4300 | Lecidea phaeops | Nyl. (1858) | Yes | Lecidea phaeops | Lecanora phaeops | 761 | LC | Lecidea phaeops | ||
| 4301 | Lecidea phylliscina | Nyl. | No | Porpidia macrocarpa f. nigrocruenta | 2399 | LC NR | ||||
| 4302 | Lecidea phylliscocarpa | Nyl. | No | Lecidea auriculata | 701 | LC NS | ||||
| 4303 | Lecidea phyllodisca | Stirt. | No | Adelolecia pilati | 762 | DD NR Sc | ||||
| 4304 | Lecidea physciaria | Nyl. (1897) | No | Phacothecium varium | 1953 | LC NR | LF | |||
| 4305 | Lecidea picta | Taylor | No | Caloplaca | Caloplaca ? arenaria | NE | ||||
| 4306 | Lecidea pilati | (Hepp) Körb. | No | Adelolecia pilati | 762 | DD NR Sc | ||||
| 4307 | Lecidea pineti | Ach. (1810) | No | Coenogonium pineti | 489 | LC | ||||
| 4308 | Lecidea pinicola | sensu Borrer | No | Amandinea punctata | 212 | LC | ||||
| 4309 | Lecidea pissodes | Stirt. | No | Clauzadeana macula | 746 | LC NS | ||||
| 4310 | Lecidea plana | (J. Lahm) Nyl. (1872) | Yes | Lecidea plana | 764 | LC | Lecidea plana | |||
| 4311 | Lecidea poliodes | Nyl. | No | Brianaria lutulata | 882 | LC | ||||
| 4312 | Lecidea polioides | Nyl. [orth. error] | No | Brianaria lutulata | 882 | LC | ||||
| 4313 | Lecidea polospora | Leight. (1878) | No | Orcularia insperata | 1282 | DD NR | ||||
| 4314 | Lecidea polyantha | Taylor ex Leight. | No | Lecidella asema | 804 | LC | ||||
| 4315 | Lecidea polycarpa | Flörke ex Sommerf. (1826) | No | Lecidea lactea s. lat. | 737 | LC | ||||
| 4316 | Lecidea polycarpella | Erichsen | No | Micarea polycarpella | 1770 | LC NR | ||||
| 4317 | Lecidea polysita | Stirt. | No | Bacidia polychroa | 163 | Ex | ||||
| 4318 | Lecidea porphyrospoda | (Anzi) Th. Fr. | No | Myochroidea porphyrospoda | 1988 | NT NR Sc | ||||
| 4319 | Lecidea postuma | Nyl. (1868) | No | Rhizocarpon postumum | 1271 | DD NR | ||||
| 4320 | Lecidea praecavenda | Nyl. ex Cromb. | No | Amandinea punctata | 212 | LC |