| Asteraceae | |
Omalotheca caucasica
| (Sommier & Levier) Czerep. | Sosud. Rast. SSSR 88 | 1981 |
| Asteraceae | |
Omalotheca nanchuanensis
| (Y. Ling & Y.Q. Tseng) Holub | | |
| Asteraceae | |
Omalotheca norvegica
| (Gunnerus) Sch. Bip. & F.W. Schultz | Arch. Fl. J. Bot. 2: 311 | 1861 |
| Asteraceae | |
Omalotheca silvatica
| Sch. Bip. & F.W. Schultz | Arch. Fl. Fr. Allem. 311 | 1854 |
| Asteraceae | |
Omalotheca stewartii
| (C.B. Clarke ex Hook. f.) Holub | Folia Geobot. Phytotax. 12(4): 429 | 1977 |
| Asteraceae | ** |
Omalotheca supina
| (L.) Cass. | Dict. Sci. Nat. (ed. 2) 56: 218 | 1828 |
| Asteraceae | |
Omalotheca supina
| (L.) DC. | Prodr. 6: 245 | 1837 [1838] |
| Asteraceae | |
Omalotheca sylvatica
| (L.) Sch. Bip. & F.W. Schultz | Arch. Fl. J. Bot. 2: 311 | 1861 |