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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6631 | Placidium michelii | A. Massal. (1855) | Yes | Placidium michelii | Catapyrenium michelii | 302 | VU D2 NR P | Placidium michelii | ||
| 6632 | Placidium pilosellum | (Breuss) Breuss (1996) | Yes | Placidium pilosellum | Catapyrenium pilosellum | 1586 | NT NS Sc | Placidium pilosellum | ||
| 6633 | Placidium rufescens | (Ach.) A. Massal. (1855) | Yes | Placidium rufescens | Catapyrenium rufescens Dermatocarpon lachneum auct. p.p. Dermatocarpon rufescens |
1776 | DD NR | Placidium rufescens | ||
| 6634 | Placidium squamulosum | (Ach.) Breuss (1996) | Yes | Placidium squamulosum | Catapyrenium squamulosum Dermatocarpon hepaticum auct. p.p. Dermatocarpon lachneum auct. p.p. |
1608 | LC | Placidium squamulosum | ||
| 6635 | Placocarpus psoromoides | (Borrer) Trev. | No | Catapyrenium psoromoides | 303 | CR D NR P Sc S8 | ||||
| 6636 | Placodium albolutescens | (Nyl.) A.L. Sm. (1918) | No | Kuettlingeria albolutescens | 2503 | LC NS | ||||
| 6637 | Placodium atroflavum | (Turner) A.L. Sm. (1918) | No | Kuettlingeria atroflava | 237 | CR D NR P Wa | ||||
| 6638 | Placodium aurantiacum | auct. p.p. | No | Gyalolechia flavorubescens | 254 | EN A NS P Eng Sc Wa | ||||
| 6639 | Placodium aurantiacum | auct. p.p. | No | Gyalolechia flavovirescens | 255 | LC | ||||
| 6640 | Placodium aurantiacum subsp. irrubescens | (Nyl. ex Arnold) A.L. Sm. (1918) | No | Squamulea subsoluta | 262 | DD NR Sc | ||||
| 6641 | Placodium aurantiacum var. flavovirescens | (Wulfen) Nägeli ex Hepp (1853) | No | Gyalolechia flavovirescens | 255 | LC | ||||
| 6642 | Placodium aurantiacum var. inalpinum | (Ach.) Hepp (1857) | No | Gyalolechia flavovirescens | 255 | LC | ||||
| 6643 | Placodium caesiorufum | auct. | No | Kuettlingeria ceracea | 1644 | LC | ||||
| 6644 | Placodium callopismum | (Ach.) Mérat (1821) | No | Variospora aurantia | 239 | LC | ||||
| 6645 | Placodium callopismum f. thallincolum | (Wedd.) Walt. Watson (1930) | No | Variospora thallincola | 282 | LC | ||||
| 6646 | Placodium callopismum var. brevilobatum | (Nyl.) A.L. Sm. (1918) | No | Variospora flavescens | 259 | LC | ||||
| 6647 | Placodium callopismum var. plicatum | (Wedd.) Leight. (1871) | No | Variospora flavescens | 259 | LC | ||||
| 6648 | Placodium canescens | (Dicks.) DC. (1805) | Diploicia canescens | 491 | LC | |||||
| 6649 | Placodium cerinellum | (Nyl.) Vain. (1899) | No | Athallia cerinella | 242 | LC | ||||
| 6650 | Placodium cerinum | (Hedw.) Nägeli ex Hepp (1853) | No | Caloplaca cerina | 241 | LC | ||||
| 6651 | Placodium cerinum f. cyanopolium | (Nyl.) A.L. Sm. | No | Caloplaca chlorina | 263 | LC | ||||
| 6652 | Placodium cerinum var. chlorina | (Flot.) Körb. | No | Caloplaca chlorina | 263 | LC | ||||
| 6653 | Placodium cerinum var. stilicidiorum | (Vahl) Hepp [orth. error] | No | Caloplaca stillicidiorum | 1991 | LC NS | ||||
| 6654 | Placodium cerinum var. stillicidiorum | (Vahl) Hepp (1857) | No | Caloplaca stillicidiorum | 1991 | LC NS | ||||
| 6655 | Placodium chalybaeum | (Fr.) Nägeli ex Hepp (1853) | No | Pyrenodesmia chalybaea | 243 | LC NS | ||||
| 6656 | Placodium cirrochroum | (Ach.) Rabenh. (1856) | No | Leproplaca cirrochroa | 246 | LC | ||||
| 6657 | Placodium cirrochroum var. obliterans | (Nyl.) A.L. Sm. (1918) | No | Leproplaca obliterans | 270 | LC NS | ||||
| 6658 | Placodium citrinum | (Hoffm.) Hepp (1857), sensu auct. brit. | No | Flavoplaca citrina s. lat. | 247 | LC | ||||
| 6659 | Placodium concilians | (Nyl.) A.L. Sm. | No | Caloplaca concilians | 248 | DD NR Sc | ||||
| 6660 | Placodium crenulatellum | (Nyl.) A.L. Sm. (1918) | No | Xanthocarpia crenulatella | 249 | LC |