What is "sagapenum"

Sagapenum \Sag`a*pe"num\, n. [L. sagapenon, sacopenium, Gr. ?: cf. F. sagapin, gomme sagapin, sagap['e]num, Ar. sikb[=i]naj, Per. sakb[=i]nah, sikb[=i]nah.] (Med.) A fetid gum resin obtained from a species of Ferula. It has been used in hysteria, etc., but is now seldom met with.
--U. S. Disp.

n. A yellow to brown bitter gum that derives from plants of the genus ''Ferula''.

Sagapenum ( Greek σᾰγάπηνον, σικβινίτζα ( Du Cange), σεραπίων; Arabic sakbīnadj; Latin sagapenum, sagapium, seraphinum ( Pharm. Witenbergica)) is a historical plant from Media, identified with Ferula persica L., Ferula scuntziana ( Umbelliferae), or Ferula scowitziana, also denoting its yellow translucent balsam, which causes irritation of the skin and whose smell resembles that of asafoetida.