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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4261 | Lecidea physciaria | Nyl. (1897) | No | Phacothecium varium | 1953 | LC NR | LF | |||
| 4262 | Lecidea picta | Taylor | No | Caloplaca | Caloplaca ? arenaria | NE | ||||
| 4263 | Lecidea pilati | (Hepp) Körb. | No | Adelolecia pilati | 762 | DD NR Sc | ||||
| 4264 | Lecidea pineti | Ach. (1810) | No | Coenogonium pineti | 489 | LC | ||||
| 4265 | Lecidea pinicola | sensu Borrer | No | Amandinea punctata | 212 | LC | ||||
| 4266 | Lecidea pissodes | Stirt. | No | Clauzadeana macula | 746 | LC NS | ||||
| 4267 | Lecidea plana | (J. Lahm) Nyl. (1872) | Yes | Lecidea plana | 764 | LC | Lecidea plana | |||
| 4268 | Lecidea poliodes | Nyl. | No | Brianaria lutulata | 882 | LC | ||||
| 4269 | Lecidea polioides | Nyl. [orth. error] | No | Brianaria lutulata | 882 | LC | ||||
| 4270 | Lecidea polospora | Leight. (1878) | No | Orcularia insperata | 1282 | DD NR | ||||
| 4271 | Lecidea polyantha | Taylor ex Leight. | No | Lecidella asema | 804 | LC | ||||
| 4272 | Lecidea polycarpa | Flörke ex Sommerf. (1826) | No | Lecidea lactea s. lat. | 737 | LC | ||||
| 4273 | Lecidea polycarpella | Erichsen | No | Micarea polycarpella | 1770 | LC NR | ||||
| 4274 | Lecidea polysita | Stirt. | No | Bacidia polychroa | 163 | Ex | ||||
| 4275 | Lecidea porphyrospoda | (Anzi) Th. Fr. | No | Myochroidea porphyrospoda | 1988 | NT NR Sc | ||||
| 4276 | Lecidea postuma | Nyl. | No | Rhizocarpon postumum | 1271 | DD NR | ||||
| 4277 | Lecidea praecavenda | Nyl. ex Cromb. | No | Amandinea punctata | 212 | LC | ||||
| 4278 | Lecidea praerimata | Nyl. (1876) | No | Dirina fallax | 2622 | NE | ||||
| 4279 | Lecidea praeruptorum | Du Rietz & H. Magn. | No | Fuscidea praeruptorum | 525 | LC | ||||
| 4280 | Lecidea prasina | auct. p.p. | No | Micarea micrococca | 2359 | VU C, D1 NR P Eng Wa | ||||
| 4281 | Lecidea prasina | (Fr.) Schaer. | No | Micarea prasina s. lat. | 887 | |||||
| 4282 | Lecidea prasiniza | Nyl. | No | Micarea prasina s. lat. | 887 | |||||
| 4283 | Lecidea prasinolepis | auct. brit., non (Nyl.) Th. Fr. | No | Biatora vernalis | 791 | LC NS | ||||
| 4284 | Lecidea prasinula | auct. p.max.p. | No | Lecidella meiococca | 800 | LC NS | ||||
| 4285 | Lecidea prasinula | (Wedd.) B. de Lesd. (1908), non auct brit. | No | Lecidella scabra | 802 | LC | ||||
| 4286 | Lecidea premnea | Ach. | No | Cresponea premnea | 605 | LC Sc IR | ||||
| 4287 | Lecidea privigna | Ach., non auct. brit. | No | Acarospora privigna | 1167 | LC | ||||
| 4288 | Lecidea privigna | auct. brit., non Ach. | No | Sarcogyne hypophaea | 1305 | LC NS | ||||
| 4289 | Lecidea prominula | Borrer | No | Lecidella stigmatea | 803 | LC | ||||
| 4290 | Lecidea prominula var. ? | Borrer (1831) | No | Porpidia crustulata | 564 | LC |