| Liliaceae | |
Lilium philadelphicum fo. andinum
| Nutt. ex Voss | Vilm. Blumengärtn. ed. 3 1: 1096 | 1895 |
| Liliaceae | |
Lilium philadelphicum var. andinum
| (Nutt.) Ker Gawl. | Bot. Reg. 7: , pl. 594 | 1822 |
| Liliaceae | |
Lilium philadelphicum var. angustifolium
| Duch. | J. Soc. Natl. Hort. France II, 5: 50 | 1871 |
| Liliaceae | |
Lilium philadelphicum subsp. editorum
| (Fernald) Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum fo. flaviflorum
| E.F. Williams | Rhodora 15(180): 218 | 1913 |
| Liliaceae | |
Lilium philadelphicum fo. immaculatum
| Raup | Contr. Arnold Arbor. 6: 138 | 1934 |
| Liliaceae | |
Lilium philadelphicum fo. lanceolatum
| (T.J.Fitzp.) Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum fo. masseyi
| (Hyams) Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum fo. montanum
| (A. Nelson) Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum var. montanum
| (A. Nelson) Cockerell | Fl. Boulder Colorado 92 | 1911 |
| Liliaceae | |
Lilium philadelphicum fo. philadelphicum
| | | |
| Liliaceae | |
Lilium philadelphicum subsp. philadelphicum
| | | |
| Liliaceae | |
Lilium philadelphicum var. philadelphicum
| | | |
| Liliaceae | |
Lilium philadelphicum fo. pulchrum
| (Aldrich) Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum var. pulchrum
| Aldrich | Hardwicke's Sci. Gossip 25: 189 | 1889 |
| Liliaceae | ** |
Lilium philadelphicum subsp. typicum
| Wherry | Bartonia 24: 7 | 1947 |
| Liliaceae | |
Lilium philadelphicum subsp. umbellatum
| (Pursh) Á. Löve & D. Löve | Taxon 30(4): 850 | 1981 |
| Liliaceae | |
Lilium philadelphicum fo. wausharaicum
| (Leichtlin ex Duch.) Wherry | Bartonia 25: 71 | 1949 |
| Liliaceae | |
Lilium philadelphicum var. wausharaicum
| Leichtlin ex Duch. | J. Soc. Natl. Hort. France II, 5: 49 | 1871 |