| Linaceae | |
Linum lewisii fo. albiflorum
| (Cockerell) H. St. John | Fl. SE. Washington 244 | 1937 |
| Linaceae | |
Linum lewisii var. alpicola
| Jeps. | Fl. Calif. 2(3): 398 | 1936 |
| Linaceae | |
Linum lewisii fo. lepagei
| (B. Boivin) Lepage | Naturaliste Canad. 84(2): 61 | 1957 |
| Linaceae | |
Linum lewisii subsp. lepagei
| (B. Boivin) Mosquin | Canad. J. Bot. 49(8): 1379 | 1971 |
| Linaceae | |
Linum lewisii var. lepagei
| (B. Boivin) C.M. Rogers | Phytologia 41(7): 448 | 1979 |
| Linaceae | |
Linum lewisii var. lewisii
| | | |
| Linaceae | |
Linum lewisii var. pratense
| Norton | Trans. Acad. Sci. St. Louis 12(4): 38, pl. 6 | 1902 |
| Linaceae | |
Linum lewisii var. saxosum
| Maguire & A.H. Holmgren | Leafl. W. Bot. 4(11): 265–266 | 1946 |