| genus name | citation | reason |
|---|---|---|
| Alopicarpous Neck. | Elem. 2:369 1790 | because "Paris, vox gallica," was too significant and should be rejected as a genus name. |
| Cartalinia Szov. in Kunth | Enum. Pl. 5:119 1836 | in synonymy for Paris incompleta M.Bieb. |
| Daiswa Raf. | Fl. Tell. 4:18 1836 | because they were 5-merous. |
| Delostylis Raf. | Jour. Phys. 89:102 1819 | because they possessed a common style. |
| Demidovia Hoffm. | Hort. Mosq. f.2 1808 | because it was apetalous. |
| Esdra Salisb. | Gen. Pl. Frag. 60 1866 | because all its organs strictly sessile. |
| Euthrya Salisb. | Gen. Pl. Frag. 61 1866 | because it has a capsular fruit with a common style. |
| Kinugasa Tatewaki and Sutô | Trans. Sapporo Nat. Hist. Soc. 14:34 1935 | Believed to be distinct from Paris because of petaloid sepals and caespitose habit; different from Trillium by the shape of the leaves and the number of floral parts; and different from Trillidium by rhizome characters, merosity, and shape of pistil and leaves. |
| Phyllantherum Raf. | Jour. Phys. 91:72 1820 | because they lacked a pedicel. |
| Trillidium Kunth | Enum. Pl. 5:120 1850 | because it was halfway between Paris and Trillium. The whole perianth was colored, the anther dehiscence was extrorse, the stigma was subulate, and the perianth was hexamerous. |