Trigonosciadium is a genus of five species in the Apiaceae. Trigonosciadium brachytaenium is endemic to Iran, whereas T. tuberosum and T. viscidulum grow in Iran, Anatolia and Iraq.
Accepted species in the genus include:
Trigonosciadium brachytaenium (Boiss.) Alava
Trigonosciadium intermedium Freyn & Sint.
Trigonosciadium komarovii (Manden.) Tamamsch.
Trigonosciadium lasiocarpum (Boiss.) Alava
Trigonosciadium tuberosum Boiss.
Trigonosciadium viscidulum Boiss. & Hausskn.
Muẓaffariyān, Valī Allāh. ...