Nat. ord., Umbelliferae.

Button Snake-root.

Characters. - Root dark brown, very knotty, wrinkled horizontally; fibres of the same colour growing downward. Internally yellowish-white, with an odour resembling Iris Versicolor, and a sweetish aromatic taste, succeeded by bitterness and a pungency affecting the fauces. It also resembles the taste of Senega.

An account and proving of this are given in Hale's New Remedies.

Part employed. - The root.

Preparations. - Tincture. Trituration of the dried root.