Thaspium trifoliatum Britton species synonym

Smyrnium barbinode (Michx.) Muhl. ex Pursh species synonym

Thapsia trifoliata L. species heterotypic synonym

Carum cordatum (Walter) Alph.Wood species synonym

Thaspium trifoliatum var. atropurpureum (Nutt.) A.Gray variety synonym

Thapsia trifoliata Mill. species synonym

Carum cordatum (Walter) J.M.Coult. & Rose species synonym

Smyrnium atropurpureum Lam. species synonym

Thaspium barbinode var. barbinode variety synonym

Thaspium ziziopsis Daniels species synonym

Thaspium walteri Shuttlew. ex A.Gray species synonym

Thaspium trifoliatum f. atropurpureum (Nutt.) Farw. form synonym

Thaspium sylvaticum (Benke) G.N.Jones species synonym

Thaspium purpureum Walp. species synonym

Thaspium cordatum var. atropurpureum (Nutt.) Alph.Wood variety synonym

Thaspium commutatum species accepted

Thaspium barbinode var. pinnatifidum J.M.Coult. & Rose variety synonym

Thaspium barbinode var. garmanii J.M.Coult. & Rose variety synonym

Thaspium barbinode var. chapmanii J.M.Coult. & Rose variety synonym

Thaspium aureum var. trifoliatum (L.) J.M.Coult. & Rose variety synonym

Thaspium aureum var. involucratum J.M.Coult. & Rose variety synonym

Thaspium aureum var. cordatum Britton, Sterns & Poggenb. variety synonym

Thaspium aureum var. atropurpureum (Nutt.) J.M.Coult. & Rose variety synonym

Thaspium aureum var. apterum A.Gray variety synonym

Thaspium atropurpureum (Desr.) Nutt. species synonym

Smyrnium trifoliatum (L.) Muhl. species synonym

Zizia sylvatica Benke species synonym

Zizia pinnatifida Buckley species synonym

Zizia parvifolia Raf. species synonym

Smyrnium cordatum Walter species synonym

Smyrnium atropurpureum Desr. species synonym

Ligusticum barbinode Michx. species synonym

Thaspium walteri Shuttlew. species synonym

Upopion trifoliatum (L.) Raf. species synonym

Upopion pinnatum Raf. species synonym

Upopion lobatum Raf. species doubtful

Upopion heterophylum Raf. species synonym

Upopion cordatum (Walter) Raf. species synonym

Thaspium pinnatifidum (Buckley) A.Gray species accepted

Thaspium trifoliatum (L.) A.Gray species accepted

Thaspium barbinode (Michx.) Nutt. species accepted

Thaspium chapmanii (J.M.Coult. & Rose) Small species synonym

Thaspium barbinode var. angustifolium J.M.Coult. & Rose variety synonym