Ammoniacum is a gum-resin exuded from the stem of a perennial herb (Dorema ammoniacum) of the umbel family (Apiaceae). Ammoniacum has a faintly fetid, unpleasant odour; externally it possesses a reddish-yellow appearance and a waxy luster.
Notes and references
- ↑ "Ammoniacum" at Wikipedia
- ↑ Label Collection book in the Harry Potter Wizard's Collection box set.
- ↑ The label reads: "of Mummy, Mastick, Red Myrrhe, Olibanum, Ammoniacum, Oppopanax, Bdelium, each ʒii. Vitriol ℔ii. Honey, ℔ii. Tartar ℥1,ſs. Aquavitæ, gal.iii." which uses the apothecaries' system of weights.