| Liliaceae | |
Lilium washingtonianum var. minus
| Purdy | J. Roy. Hort. Soc. 26: 358 | 1901 |
| Liliaceae | |
Lilium washingtonianum subsp. purpurascens
| (Stearn) M.W. Skinner | Novon 12(2): 258 | 2002 |
| Liliaceae | |
Lilium washingtonianum var. purpurascens
| Stearn | Gard. Chron., ser. 3 124: 13 | 1948 |
| Liliaceae | |
Lilium washingtonianum var. purpureum
| W. Bull ex Baker | J. Linn. Soc., Bot. 14: 233 | 1874 |
| Liliaceae | * |
Lilium washingtonianum var. rubescens
| (S. Watson) Tilton | Stand. Cycl. Hort. 4: 1869 | 1916 |
| Liliaceae | |
Lilium washingtonianum subsp. washingtonianum
| | | |
| Liliaceae | |
Lilium washingtonianum var. washingtonianum
| | | |