| Osmorhiza ambigua (A. Gray) J.M. Coult. & Rose |
Synonym |
 |
TRO |
| Osmorhiza amurensis F. Schmidt ex Maxim. |
Synonym |
 |
TRO |
| Osmorhiza aristata (Thunb.) Rydb. |
Accepted |
 |
TRO |
| Osmorhiza aristata var. aristata |
Accepted |
 |
TRO |
| Osmorhiza aristata var. brevistylis (DC.) B. Boivin |
Accepted |
 |
TRO |
| Osmorhiza aristata var. laxa (Royle) Constance & Shan |
Accepted |
 |
TRO |
| Osmorhiza aristata var. longistylis (Torr.) B. Boivin |
Accepted |
 |
TRO |
| Osmorhiza aristata var. montana Makino |
Synonym |
 |
TRO |
| Osmorhiza berteroi DC. |
Accepted |
 |
WCSP (in review) |
| Osmorhiza bipatriata Constance & Shan |
Synonym |
 |
TRO |
| Osmorhiza bolanderi (A. Gray) Jeps. |
Accepted |
 |
TRO |
| Osmorhiza brachypoda Torr. ex Durand |
Synonym |
 |
TRO |
| Osmorhiza brevipes (J.M. Coult. & Rose) Suksd. |
Accepted |
 |
TRO |
| Osmorhiza brevistylis DC. |
Synonym |
 |
TRO |
| Osmorhiza chilensis Hook. & Arn. |
Accepted |
 |
TRO |
| Osmorhiza chilensis var. cupressimontana (B. Boivin) B. Boivin |
Accepted |
 |
TRO |
| Osmorhiza chilensis var. purpurea (J.M. Coult. & Rose) B. Boivin |
Accepted |
 |
TRO |
| Osmorhiza claytonii (Michx.) C.B. Clarke |
Synonym |
 |
TRO |
| Osmorhiza cordata Raf. |
Unresolved |
 |
WCSP (in review) |
| Osmorhiza depauperata Phil. |
Accepted |
 |
TRO |
| Osmorhiza divaricata (Britton) Suksd. |
Synonym |
 |
TRO |
| Osmorhiza divaricata (Britton) Piper |
Synonym |
 |
TRO |
| Osmorhiza dulcis Raf. |
Synonym |
 |
TRO |
| Osmorhiza edulis Raf. |
Unresolved |
 |
WCSP (in review) |
| Osmorhiza glabrata Phil. |
Accepted |
 |
WCSP (in review) |
| Osmorhiza intermedia (Rydb.) Blank. |
Synonym |
 |
TRO |
| Osmorhiza intermedia (Rydb.) Rydb. |
Accepted |
 |
TRO |
| Osmorhiza japonica Siebold & Zucc. |
Synonym |
 |
TRO |
| Osmorhiza laxa Royle |
Synonym |
 |
TRO |
| Osmorhiza leibergii (J.M. Coult. & Rose) Suksd. |
Accepted |
 |
TRO |
| Osmorhiza leibergii (J.M. Coult. & Rose) Blank. |
Synonym |
 |
TRO |
| Osmorhiza longistylis (Torr.) DC. |
Synonym |
 |
TRO |
| Osmorhiza longistylis var. brachycoma S.F. Blake |
Synonym |
 |
TRO |
| Osmorhiza longistylis var. villicaulis Fernald |
Unresolved |
 |
WCSP (in review) |
| Osmorhiza mexicana Griseb. |
Accepted |
 |
TRO |
| Osmorhiza mexicana subsp. bipatriata (Constance & Shan) Lowry & A.G. Jones |
Accepted |
 |
TRO |
| Osmorhiza montana Makino |
Unresolved |
 |
WCSP (in review) |
| Osmorhiza nuda Torr. |
Synonym |
 |
TRO |
| Osmorhiza nuda var. divaricata (Britton) Jeps. |
Unresolved |
 |
TRO |
| Osmorhiza obtusa (J.M. Coult. & Rose) Fernald |
Synonym |
 |
TRO |
| Osmorhiza obtusa var. cupressimontana B. Boivin |
Synonym |
 |
TRO |
| Osmorhiza occidentalis (Nutt.) Torr. |
Synonym |
 |
TRO |
| Osmorhiza occidentalis var. bolanderi (A. Gray) J.M. Coult. & Rose |
Synonym |
 |
TRO |
| Osmorhiza purpurea (J.M. Coult. & Rose) Suksd. |
Synonym |
 |
TRO |
| Osmorhiza villicaulis (Fernald) Rydb. |
Unresolved |
 |
WCSP (in review) |
| Osmorhiza villosa Raf. |
Unresolved |
 |
WCSP (in review) |