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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2101 | Coenogonium nimisii | Malíček & Sanderson (2023) | Yes | Coenogonium nimisii | Coenogonium confusum in ed. | 2787 | NE NS | Coenogonium nimisii | ||
| 2102 | Coenogonium pineti | (Ach.) Lücking & Lumbsch (2004) | Yes | Coenogonium pineti | Dimerella diluta; Dimerella pineti | 489 | LC | Coenogonium pineti | ||
| 2103 | Coenogonium tavaresianum | (Vězda) Lücking, Aptroot & Sipman (2006) | Yes | Coenogonium tavaresianum | Dimerella tavaresiana | 2695 | NE NR | Coenogonium tavaresianum | ||
| 2104 | Collema aggregatum | auct. | No | Gabura fascicularis | 444 | NT NS P Sc WaL IR | ||||
| 2105 | Collema auriculatum | Hoffm. (1796) | No | Lathagrium auriforme | 433 | LC | ||||
| 2106 | Collema auriculatum f. membranaceum | (Kremp.) Leight. (1879) | No | Lathagium auriforme | 433 | LC | ||||
| 2107 | Collema auriculatum var. pinguescens | Nyl. ex Cromb. | No | Lathagrium cristatum | 442 | LC | ||||
| 2108 | Collema auriforme | (With.) Coppins & J.R. Laundon (1984) | No | Lathagrium auriforme | 433 | LC | ||||
| 2109 | Collema bachmanianum | (Fink) Degel. (1954) | No | Enchylium bachmanianum | 434 | NT NS Sc IR | ||||
| 2110 | Collema callopismum var. callopismum | A. Massal. (1856) | No | Scytinium callopismum | 435 | DD NR | ||||
| 2111 | Collema callopismum var. rhyparodes | (Nyl.) Degel. (1954) | No | Scytinium callopismum var. rhyparodes | 436 | DD NR Sc | ||||
| 2112 | Collema ceraniscum | Nyl. (1865) | No | Rostania ceranisca | 437 | VU D1, D2 NR Sc | ||||
| 2113 | Collema ceranoides | sensu Mudd (1861) p.p. | No | Rostania ceranisca | 437 | VU D1, D2 NR Sc | ||||
| 2114 | Collema ceranoides | Borrer | No | Enchylium tenax var. ceranoides | 460 | LC | ||||
| 2115 | Collema chalazanodes | Nyl. | No | Lempholemma chalazanodes | 812 | ? Lempholemma polyanthes | NE | |||
| 2116 | Collema chalazanum | Ach. | No | Lempholemma chalazanum | 813 | DD NS | ||||
| 2117 | Collema cheileum | (Ach.) Ach. (1810) | No | Blennothallia crispa | 440 | LC | ||||
| 2118 | Collema cheileum f. dispersum | Walt. Watson (1927) | No | Blennothallia crispa | 440 | LC | ||||
| 2119 | Collema cheileum f. monocarpum | sensu Leight. (1879) | No | Blennothallia crispa | 440 | LC | ||||
| 2120 | Collema cheileum f. monocarpum | (Dufour ex Schaer.) Cromb. (1894) | No | Blennothallia crispa | 440 | LC | ||||
| 2121 | Collema cheileum f. nudum | (Schaer.) Leight. (1879) | No | Blennothallia crispa | 440 | LC | ||||
| 2122 | Collema concinnum | Flot. | No | Enchylium tenax var. tenax | 459 | LC | ||||
| 2123 | Collema confertum | (Ach.) Leight., non Hepp ex Arnold | No | ?Enchylium tenax | ? Enchylium tenax | |||||
| 2124 | Collema confertum | Hepp ex Arnold (1859) | No | Enchylium confertum | 438 | DD NR | ||||
| 2125 | Collema conglomeratum | Hoffm. (1796) | No | Enchylium conglomeratum | 439 | Ex | ||||
| 2126 | Collema crispum | auct. p.p. | No | Enchylium bachmanianum | 434 | NT NS Sc IR | ||||
| 2127 | Collema crispum f. graniforme | Harm. | No | Blennothallia crispa | 440 | LC | ||||
| 2128 | Collema crispum f. nudum | Schaer. (1850) | No | Blennothallia crispa | 440 | LC | ||||
| 2129 | Collema crispum subsp. ceranoides | (Borrer) Nyl. ex Cromb. (1894) | No | Enchylium tenax var. ceranoides | 460 | LC | ||||
| 2130 | Collema crispum var. crispum | (Huds.) F.H. Wigg. (1780) | No | Blennothallia crispa | 440 | LC |