Quassia bitter, or Simaruba tree

Simarubaceae - Simaroubaceae. Pharmacy name: simaruba root bark - Simarubae cortex radicis (formerly: Cortex Simarubae radicis).

Botanical description.
An evergreen tree with odd-pinnate leaves. Small white or reddish flowers are collected in dense panicles. It grows in the north of South America, on the Antilles.

Active ingredients: tannins, bitterness, alkaloids, resins.

Application. As a tanning medicinal raw material, it has a fixing effect, especially in amoebic dysentery. It is also used as an appetite stimulating bitter.