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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3571 | Lecanora polytropa f. efflorescens | Cromb. | No | Lecanora soralifera | 679 | LC | ||||
| 3572 | Lecanora polytropa var. stenotropa | (Nyl.) A.L. Sm. | No | Lecanora stenotropa | 680 | LC | ||||
| 3573 | Lecanora populicola | (DC.) Duby (1830) | No | Myriolecis populicola | 668 | LC NS Sc | ||||
| 3574 | Lecanora poriniformis | Nyl. | No | Ochrolechia xanthostoma | 1097 | LC NS | ||||
| 3575 | Lecanora praepostera | Nyl. (1873) | Yes | Lecanora praepostera | Lecanora schistina | 669 | LC NS | Lecanora praepostera | ||
| 3576 | Lecanora prevostii | (Duby) Th. Fr. | No | Hymenelia prevostii | 574 | LC NS | ||||
| 3577 | Lecanora prevostii f. melanocarpa | (Kremp.) Stizenb. | No | Hymenelia melanocarpa | 588 | VU D2 NR Sc | ||||
| 3578 | Lecanora prosechoides | Nyl. | No | Lecanora helicopis | 655 | LC | ||||
| 3579 | Lecanora prosechoidiza | Nyl. | No | Lecanora helicopis | 655 | LC | ||||
| 3580 | Lecanora pruinosa | Chaub. (1821) | No | Myriolecis pruinosa | 670 | LC NS | ||||
| 3581 | Lecanora psarophana | Nyl. | No | Protoparmelia montagnei | 671 | LC NS | ||||
| 3582 | Lecanora pulicaris | (Pers.) Ach. (1814) | Yes | Lecanora pulicaris | Lecanora chlarona Lecanora pulicaris f. pinastri |
672 | LC | Lecanora pulicaris | ||
| 3583 | Lecanora pyracea | auct. p.p., non (Ach.) Nyl. | No | Caloplaca holocarpa s. lat. | 261 | name or specific epithet valid but has been misused in the past | LC | |||
| 3584 | Lecanora pyracea | auct. p.p., non (Ach.) Nyl. | No | Caloplaca oasis | 2461 | name or specific epithet valid but has been misused in the past | LC | |||
| 3585 | Lecanora pyracea f. picta | (Taylor) Cromb. | No | Caloplaca | ? Caloplaca arenaria | NE | ||||
| 3586 | Lecanora pyracea var. lactea | auct. brit. non (A. Massal.) Stizenb. | No | Caloplaca marmorata | 264 | LC | ||||
| 3587 | Lecanora pyracea var. ulmicola | (DC.) Leight. | No | Caloplaca luteoalba | 266 | EN A2, C1 NS P Eng Sc Wa S8 | ||||
| 3588 | Lecanora pyrenopsoides | Nyl. | No | Porocyphus coccodes | 1184 | LC NS | ||||
| 3589 | Lecanora quercicola | Coppins & P. James (1979) | Yes | Lecanora quercicola | 673 | VU D1 NS P Eng Sc Wa IR | Lecanora quercicola | |||
| 3590 | Lecanora radiosa | (Hoffm.) Schaer. (1850) | No | Lobothallia radiosa | 124 | LC | ||||
| 3591 | Lecanora ralfsii | (Salwey) Cromb. | No | Halecania ralfsii | 620 | LC NS | ||||
| 3592 | Lecanora recedens | (Taylor) Nyl. (1880) | No | Lobothallia recedens | 123 | DD NR Sc | ||||
| 3593 | Lecanora rhagadiza | Nyl. | No | Myriospora rhagadiza | 2455 | Acarospora rhagadiza (Nyl.) Hue | NE NR | |||
| 3594 | Lecanora rubra | (Hoffm.) Ach. (1810) | No | Phialopsis ulmi | 542 | EN C2 NR P Eng Sc S8 IR | ||||
| 3595 | Lecanora rugosa | Nyl., non Ach. | No | Lecanora chlarotera s. lat. | 639 | LC | ||||
| 3596 | Lecanora rugosella | Zahlbr. (1928) | Yes | Lecanora rugosella | 1873 | DD NR | Lecanora rugosella | |||
| 3597 | Lecanora rupestris | (Scop.) Nyl, | No | Protoblastenia rupestris | 1189 | LC | ||||
| 3598 | Lecanora rupestris f. incrustans | (DC.) Leight. | No | Protoblastenia incrustans | 1188 | LC | ||||
| 3599 | Lecanora rupicola f. sorediata | (Flot. ex Körb) Zahlbr. (1928) | No | Glaucomaria rupicola var. efflorens | 1767 | LC NS | ||||
| 3600 | Lecanora rupicola var. efflorens | Leuckert & Poelt (1989) | No | Glaucomaria rupicola var. efflorens | 1767 | LC NS |