| Desmatodon systylius Schimp. | T. Drummond | — | Canada | — | North America | — |  |  |  |  | 
                       
                        
                            
                            
                                | Leptodictyum riparium (Hedw.) Warnst. | T. Drummond part of195 | — | Canada | — | N. America | — |  |  |  |  | 
                       
                        
                            
                            
                                | Leptodictyum riparium (Hedw.) Warnst. | T. Drummond 170 | — | Canada | — | N. America | — |  |  |  |  | 
                       
                        
                            
                            
                                | Vernonia drummondii Shuttlew. | T. Drummond s.n. | 1832 | United States of America | Missouri | Ad Missouri prope St. Louis | type |  |  |   |  | 
                       
                        
                            
                            
                                | Orthothecium strictum Lorentz | T. Drummond s.n. | s.d. | Canada | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Kalmia glauca var. microphylla Hook. | T. Drummond s.n. | s.d. | United States of America | — | Rocky Mountains | possible isotype |  |  |   |  | 
                       
                        
                            
                            
                                | Tortula cernua (Hübener) Lindb. | T. Drummond | — | Canada | — | Among the Rocky Mountains | — |  |  |  |  | 
                       
                        
                            
                            
                                | Tortula cernua (Hübener) Lindb. | T. Drummond | — | Canada | — | Among the Rocky Mountains | — |  |  |  |  | 
                       
                        
                            
                            
                                | Tortula cernua (Hübener) Lindb. | T. Drummond | — | Canada | — | Among the Rocky Mountains | — |  |  |  |  | 
                       
                        
                            
                            
                                | Orthodicranum flagellare (Hedw.) Loeske | T. Drummond 81 | — | Canada | Ontario | About Lake Superior | — |  |  |  |  | 
                       
                        
                            
                            
                                | Salix reticulata var. minima Hook. | T. Drummond 652 | — | United States of America | — | Rocky Mountains | possible isotype |  |  |   |  | 
                       
                        
                            
                            
                                | Salix reticulata var. minima Hook. | T. Drummond s.n. | — | United States of America | — | Rocky Mountains. Near plains | possible isotype |  |  |   |  | 
                       
                        
                            
                            
                                | Bowlesia incana Ruiz & Pav. | T. Drummond s.n. | s.d. | United States of America | California |  | — |  |  |   |  | 
                       
                        
                            
                            
                                | Bazzania tricrenata (Wahlenb.) Lindb. | T. Drummond | — | Canada | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Bazzania tricrenata (Wahlenb.) Lindb. | T. Drummond | — | Canada | — |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Dicranum fuscescens Turner | T. Drummond s.n. | s.d. | Canada | Ontario | In Upper Canada | — |  |  |  |  | 
                       
                        
                            
                            
                                | Scapania umbrosa (Schrad.) Dumort. | T. Drummond | — | Canada | — | "British North America" | — |  |  |  |  | 
                       
                        
                            
                            
                                | Scapania umbrosa (Schrad.) Dumort. | T. Drummond | — | Canada | — | "British North America" | — |  |  |  |  | 
                       
                        
                            
                            
                                | Haplocladium microphyllum (Hedw.) Broth. | T. Drummond | — | United States of America | — | Pennsylvania and New Orleans | — |  |  |  |  | 
                       
                        
                            
                            
                                | Harpalejeunea molleri (Steph.) Grolle | T. Drummond | — | Canada | British Columbia |  | — |  |  |  |  | 
                       
                        
                            
                            
                                | Orthotrichum pallens Bruch ex Brid. | T. Drummond s.n. | s.d. | United States of America | — | North America | — |  |  |  |  | 
                       
                        
                            
                            
                                | Calophanes oblongifolium var. texeum Nees | T. Drummond 178 | s.d. | United States of America | Texas | San Felipe | syntype |  |  |   |  | 
                       
                        
                            
                            
                                | Fissidens osmundoides Hedw. | T. Drummond | 1828 | Canada | — | Near the Rocky Mountains | — |  |  |  |  | 
                       
                        
                            
                            
                                | Fissidens osmundoides Hedw. | T. Drummond | 1828 | Canada | — | Near the Rocky Mountains | — |  |  |  |  | 
                       
                        
                            
                            
                                | Jungermannia supina T.Taylor | T. Drummond | — | — | — | North America | type |  |  |   |  |