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 sporeta | Stirt. (1878) | No | Miriquidica leucophaea | 739 | LC | ||||
| 4352 | Lecidea squalida | Ach. | No | Toninia squalida | 1427 | NT NR Sc | ||||
| 4353 | Lecidea stellulata | Tayl. | No | Buellia stellulata | 216 | LC ?NS | ||||
| 4354 | Lecidea stenospora | (Hepp) Nyl. | No | Bacidia beckhausii | 135 | LC NS | ||||
| 4355 | Lecidea stenotera | auct. brit. p.p. | No | Micarea incrassata | 1631 | LC NS | ||||
| 4356 | Lecidea stenotera | auct. brit. p.p. | No | Protomicarea limosa | 742 | LC NS | ||||
| 4357 | Lecidea stereocaulorum | (Th. Fr.) Nyl. (1866), non Anzi (1862) | No | Catillaria stereocaulorum | 2203 | NT NR | LF | |||
| 4358 | Lecidea stereocaulorum | Anzi | No | Catillaria stereocaulorum | 2203 | NT NR | LF | |||
| 4359 | Lecidea steriza | (Ach.) Vain. | No | Porpidia macrocarpa f. macrocarpa | 568 | LC | ||||
| 4360 | Lecidea stigmatea | Ach. | No | Lecidella stigmatea | 803 | LC | ||||
| 4361 | Lecidea stirtoniana | Zahlbr. | No | 776 | identity uncertain, type not traced, BLS number no longer used | |||||
| 4362 | Lecidea strasseri | Zahlbr. (1898) | Yes | Lecidea strasseri | 2877 | NE NR | ||||
| 4363 | Lecidea subcinerascens | auct. brit., non Nyl. | No | Lecidea lactea s. lat. | 737 | LC | ||||
| 4364 | Lecidea subconfusa | Nyl. | No | Micarea subconfusa | 780 | DD NR Sc | ||||
| 4365 | Lecidea subdiluta | Leight. | No | Halecania ralfsii | 620 | LC NS | ||||
| 4366 | Lecidea subdita | Nyl. | No | Lecanora formosa | 795 | NT NR Sc | ||||
| 4367 | Lecidea subfurva | Nyl. | No | Schaereria cinereorufa | 1311 | LC | ||||
| 4368 | Lecidea subgyratula | Nyl. | No | Rimularia limborina | 741 | LC NS | ||||
| 4369 | Lecidea subhumida | Vain. (1883) | Yes | Lecidea subhumida | 2719 | NE NR | Lecidea subhumida | |||
| 4370 | Lecidea subincompta | auct. | No | Toniniopsis separabilis | 168 | VU C, D1 NS P Eng Sc | ||||
| 4371 | Lecidea subincompta f. oribata | Nyl. ex Stirt., nomen nudum | No | Toniniopsis coelestina | 1424 | VU D1, D2 NR Sc | ||||
| 4372 | Lecidea subincompta subsp. oribata | (Nyl.) Cromb. (1874) | No | Toniniopsis coelestina | 1424 | VU D1, D2 NR Sc | ||||
| 4373 | Lecidea subincongrua | Nyl. | No | Lecidella asema | 804 | LC | ||||
| 4374 | Lecidea subinfidula | Nyl. | No | Brianaria tuberculata | 896 | LC NS | ||||
| 4375 | Lecidea subkochiana | sensu Cromb. | No | Lecidea lactea s. lat. | 737 | LC | ||||
| 4376 | Lecidea sublatypea | Leight. ex Cromb. | No | Carbonea vorticosa | 793 | LC NS | ||||
| 4377 | Lecidea sublivescens | (Nyl.) P. James | No | Lecanora sublivescens | 779 | NT NS P Eng Wa IR | ||||
| 4378 | Lecidea submoestula | Nyl. | No | Micarea subconfusa | 780 | DD NR Sc | ||||
| 4379 | Lecidea subnigrata | Nyl. | No | Micarea subnigrata | 891 | LC NS | ||||
| 4380 | Lecidea subplumbea | Anzi | No | Miriquidica subplumbea | 2641 | NE NS |