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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4351 | Lecidea pulveracea | Flörke ex Th. Fr. | No | Lecidella pulveracea | 801 | Ex | ||||
| 4352 | Lecidea pulverea | Borrer | No | Megalaria pulverea | 318 | LC | ||||
| 4353 | Lecidea puncta | (A. Massal.) Jatta [orth. error] | No | Bachmanniomyces punctum | 1955 | LC NS | LF | |||
| 4354 | Lecidea punctum | (A. Massal.) Jatta | No | Bachmanniomyces punctum | 2016 | LC NS | LF | |||
| 4355 | Lecidea pycnocarpa | (Körb.) Ohlert f. pycnocarpa | No | Miriquidica pycnocarpa f. pycnocarpa | 766 | LC NS | ||||
| 4356 | Lecidea pycnocarpa f. pycnocarpa | (Körb.) Ohlert | No | Miriquidica pycnocarpa f. pycnocarpa | 766 | LC NS | ||||
| 4357 | Lecidea pycnocarpa f. sorediata | Coppins & Fryday | No | Miriquidica pycnocarpa f. sorediata | 1771 | LC NS | ||||
| 4358 | Lecidea quadricolor | (Dicks.) Winch, Thornhill & R. Waugh (1807) | No | Trapeliopsis granulosa | 727 | LC | ||||
| 4359 | Lecidea querceti | Nyl. (1861) | No | Gyalecta flotovii | 536 | NT NS Sc L | ||||
| 4360 | Lecidea quernea | (Dicks.) Ach. | No | Pyrrhospora quernea | 1228 | LC | ||||
| 4361 | Lecidea ralfsii | Salwey | No | Halecania ralfsii | 620 | LC NS | ||||
| 4362 | Lecidea recedens | Taylor (1836) | No | Lobothallia recedens | 123 | DD NR Sc | ||||
| 4363 | Lecidea recensa | Stirt. | No | Fuscidea recensa | 526 | LC | ||||
| 4364 | Lecidea relicta | Stirt. | No | Lecidea stirtoniana Zahlbr., identity uncertain, type not traced | ||||||
| 4365 | Lecidea restricta | Stirt. | No | Lecidella stigmatea | 803 | LC | ||||
| 4366 | Lecidea rhizobola | Nyl. | No | Trimmatothelopsis rhizobola | 767 | VU D2 NR Sc | ||||
| 4367 | Lecidea rhypodiza | Nyl. | No | Halecania rhypodiza | 319 | VU D2 NR E P Sc IR | ||||
| 4368 | Lecidea rimosa | Leight. (1871) | No | Rhizocarpon umbilicatum | 1279 | LC | ||||
| 4369 | Lecidea rivulosa | Ach. | No | Fuscidea cyathoides var. cyathoides | 515 | LC | ||||
| 4370 | Lecidea rivulosa | auct. brit. 19th C p.p. | No | Fuscidea lygaea | 527 | LC | ||||
| 4371 | Lecidea rosella | auct. brit. p.p. | No | Bacidina phacodes | 161 | LC | ||||
| 4372 | Lecidea rosella | auct. brit. p.p. | No | Bacidia rubella | 164 | LC | ||||
| 4373 | Lecidea rubidula | Nyl. | No | Protoblastenia cyclospora | 1187 | DD NR Sc | ||||
| 4374 | Lecidea rubiformis | (Ach.) Wahlenb. | No | Psora rubiformis | 1204 | VU D2 NR Sc S8 | ||||
| 4375 | Lecidea rufofusca | auct. brit., non (Anzi) Nyl. | No | Japewiella tavaresiana | 708 | LC | ||||
| 4376 | Lecidea rupestris | (Scop.) Ach. (1803) | No | Protoblastenia rupestris | 1189 | LC | ||||
| 4377 | Lecidea rupestris var. incrustans | (DC.) Schaer. | No | Protoblastenia incrustans | 1188 | LC | ||||
| 4378 | Lecidea rupestris var. pyrithroma | Ach. (1808) | No | Athallia holocarpa s. lat. | 261 | NE | ||||
| 4379 | Lecidea rusticella | Nyl. | No | Micarea bauschiana | 873 | LC | ||||
| 4380 | Lecidea rusticula | Nyl. | No | ? Bryobilimbia ahlesii |