1) Genus hydrastis 2) Magnoliid dicot genus 
The dried rhizome of Hydrastis canadensis (family Ranunculaceae), a native of the eastern U.S.; formerly used in the treatment of chronic catarrhal states of the mucous membranes and in metrorrhagia. ... Synonym: golden seal, jaundice root, yellow root. ... Origin: Mod. L. Fr. G. Hydor (hydro-), water, + drao, to accomplish ... (05 Mar 2000) ... 
Type: Term Pronunciation: hī-dras′tis Definitions: 1. The dried rhizome of Hydrastis canadensis (family Ranunculaceae), native to eastern U.S.; formerly used to treat chronic catarrhal states of the mucous membranes and in metrorrhagia. Synonyms: golden seal, jaundice root, yellow root
[n] - small genus of perennial herbs having rhizomes and palmate leaves and small solitary flowers
goldenseal (def. 2).