Veratrum oblongum var. macranthum - orchidroots .

Veratrum oblongum var. macranthum (synonym of Veratrum maackii var. maackii)

Veratrum oblongum var. macranthum, O.Loes. 1927 (Kew)

Veratrum oblongum var. macranthum is a species in the Veratrum genus. This name is a synonym of Veratrum maackii var. maackii
No image available. Please try the accepted species maackii var. maackii