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 | Collema ceranoides | Borrer | No | Enchylium tenax var. ceranoides | 460 | LC | ||||
| 2102 | Collema chalazanodes | Nyl. | No | Lempholemma chalazanodes | 812 | ? Lempholemma polyanthes | NE | |||
| 2103 | Collema chalazanum | Ach. | No | Lempholemma chalazanum | 813 | DD NS | ||||
| 2104 | Collema cheileum | (Ach.) Ach. (1810) | No | Blennothallia crispa | 440 | LC | ||||
| 2105 | Collema cheileum f. dispersum | Walt. Watson (1927) | No | Blennothallia crispa | 440 | LC | ||||
| 2106 | Collema cheileum f. monocarpum | sensu Leight. (1879) | No | Blennothallia crispa | 440 | LC | ||||
| 2107 | Collema cheileum f. monocarpum | (Dufour ex Schaer.) Cromb. (1894) | No | Blennothallia crispa | 440 | LC | ||||
| 2108 | Collema cheileum f. nudum | (Schaer.) Leight. (1879) | No | Blennothallia crispa | 440 | LC | ||||
| 2109 | Collema concinnum | Flot. | No | Enchylium tenax var. tenax | 459 | LC | ||||
| 2110 | Collema confertum | (Ach.) Leight., non Hepp ex Arnold | No | ?Enchylium tenax | ? Enchylium tenax | |||||
| 2111 | Collema confertum | Hepp ex Arnold (1859) | No | Enchylium confertum | 438 | DD NR | ||||
| 2112 | Collema conglomeratum | Hoffm. (1796) | No | Enchylium conglomeratum | 439 | Ex | ||||
| 2113 | Collema crispum | auct. p.p. | No | Enchylium bachmanianum | 434 | NT NS Sc IR | ||||
| 2114 | Collema crispum f. graniforme | Harm. | No | Blennothallia crispa | 440 | LC | ||||
| 2115 | Collema crispum f. nudum | Schaer. (1850) | No | Blennothallia crispa | 440 | LC | ||||
| 2116 | Collema crispum subsp. ceranoides | (Borrer) Nyl. ex Cromb. (1894) | No | Enchylium tenax var. ceranoides | 460 | LC | ||||
| 2117 | Collema crispum var. crispum | (Huds.) F.H. Wigg. (1780) | No | Blennothallia crispa | 440 | LC | ||||
| 2118 | Collema crispum var. cristatulum | Nyl. ex Cromb. (1874) | No | Enchylium tenax var. tenax | 459 | LC | ||||
| 2119 | Collema crispum var. metzleri | (Arnold) Degel. (1954) | No | Blennothallia crispa | 440 | no longer a recognized variety | LC | |||
| 2120 | Collema cristatum | sensu Hook in Sm. (1833) | No | Enchylium tenax var. tenax | 459 | LC | ||||
| 2121 | Collema cristatum | (L.) F.H. Wigg. (1780) | No | Lathagrium cristatum | 442 | LC | ||||
| 2122 | Collema cristatum var. marginale | (Huds.) Degel. (1954) | No | Lathagrium cristatum var. marginale | 443 | LC ?NS | ||||
| 2123 | Collema dermatinum | auct. p.p. | No | Lathagrium auriforme | 433 | LC | ||||
| 2124 | Collema dermatinum | auct. p.p. | No | Lathagrium cristatum | 442 | LC | ||||
| 2125 | Collema dichotomum | (With.) Coppins & J.R. Laundon (1984) | No | Lathagrium dichotomum | 446 | VU B NS P Eng Sc Wa S8 | ||||
| 2126 | Collema diffractum | sensu Carroll (1865) | No | Porocyphus coccodes | 1184 | LC NS | ||||
| 2127 | Collema epiphyllum | Leight. | No | Seuratia millardetii | Seuratia millardetii (Racib.) Meeker | F | ||||
| 2128 | Collema fasciculare | sensu Leight. (1879) p.p. | No | Enchylium conglomeratum | 439 | name or specific epithet valid but has been misused in the past | Ex | |||
| 2129 | Collema fasciculare | (L.) F.H. Wigg. (1780) | No | Gabura fascicularis | 444 | NT NS P Sc WaL IR | ||||
| 2130 | Collema flaccidum | (Ach.) Ach. (1810) | Yes | Collema flaccidum | 445 | LC | Collema flaccidum |