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 promiscens | auct. brit. | No | ? Lecidea auriculata | ||||||
| 4292 | Lecidea promiscens | Nyl. (1872) | Yes | Lecidea promiscens | 1967 | DD NR | Lecidea promiscens | |||
| 4293 | Lecidea promiscua | Nyl. (1874) | Yes | Lecidea promiscua | 1968 | DD NR | Lecidea promiscua | |||
| 4294 | Lecidea promixta | Nyl. (1898) | Yes | Lecidea promixta | Lecidea pernigra | 760 | DD NR | Lecidea promixta | ||
| 4295 | Lecidea prostratula | Stirt. | No | Lecidea fuscoatra s. lat. | 724 | |||||
| 4296 | Lecidea protrusa | auct. brit. | No | Lecidella scabra | 802 | LC | ||||
| 4297 | Lecidea protrusa f. meiococca | (Nyl.) A.L. Sm. | No | Lecidella meiococca | 800 | LC NS | ||||
| 4298 | Lecidea pruinosa | auct. | No | Sarcogyne regularis | 1306 | LC | ||||
| 4299 | Lecidea pseudogranulosa | Coppins & P. James ad int. | No | Trapeliopsis pseudogranulosa | 1582 | LC | ||||
| 4300 | Lecidea pullata | (Norman) Th. Fr. (1874) | No | Frutidella furfuracea | 2488 | DD NR | ||||
| 4301 | Lecidea pulveracea | Flörke ex Th. Fr. | No | Lecidella pulveracea | 801 | Ex | ||||
| 4302 | Lecidea pulverea | Borrer | No | Megalaria pulverea | 318 | LC | ||||
| 4303 | Lecidea puncta | (A. Massal.) Jatta [orth. error] | No | Bachmanniomyces punctum | 1955 | LC NS | LF | |||
| 4304 | Lecidea punctum | (A. Massal.) Jatta | No | Bachmanniomyces punctum | 2016 | LC NS | LF | |||
| 4305 | Lecidea pycnocarpa | (Körb.) Ohlert f. pycnocarpa | No | Miriquidica pycnocarpa f. pycnocarpa | 766 | LC NS | ||||
| 4306 | Lecidea pycnocarpa f. pycnocarpa | (Körb.) Ohlert | No | Miriquidica pycnocarpa f. pycnocarpa | 766 | LC NS | ||||
| 4307 | Lecidea pycnocarpa f. sorediata | Coppins & Fryday | No | Miriquidica pycnocarpa f. sorediata | 1771 | LC NS | ||||
| 4308 | Lecidea quadricolor | (Dicks.) Winch, Thornhill & R. Waugh (1807) | No | Trapeliopsis granulosa | 727 | LC | ||||
| 4309 | Lecidea querceti | Nyl. (1861) | No | Gyalecta flotovii | 536 | NT NS Sc L | ||||
| 4310 | Lecidea quernea | (Dicks.) Ach. | No | Pyrrhospora quernea | 1228 | LC | ||||
| 4311 | Lecidea ralfsii | Salwey | No | Halecania ralfsii | 620 | LC NS | ||||
| 4312 | Lecidea recedens | Taylor (1836) | No | Lobothallia recedens | 123 | DD NR Sc | ||||
| 4313 | Lecidea recensa | Stirt. | No | Fuscidea recensa | 526 | LC | ||||
| 4314 | Lecidea relicta | Stirt. | No | Lecidea stirtoniana Zahlbr., identity uncertain, type not traced | ||||||
| 4315 | Lecidea restricta | Stirt. | No | Lecidella stigmatea | 803 | LC | ||||
| 4316 | Lecidea rhizobola | Nyl. | No | Trimmatothelopsis rhizobola | 767 | VU D2 NR Sc | ||||
| 4317 | Lecidea rhypodiza | Nyl. | No | Halecania rhypodiza | 319 | VU D2 NR E P Sc IR | ||||
| 4318 | Lecidea rimosa | (Dicks.) Leight. | No | Rhizocarpon umbilicatum | 1279 | LC | ||||
| 4319 | Lecidea rivulosa | Ach. | No | Fuscidea cyathoides var. cyathoides | 515 | LC | ||||
| 4320 | Lecidea rivulosa | auct. brit. 19th C p.p. | No | Fuscidea lygaea | 527 | LC |