xanthorhamnin

[Pref. xantho-. and Eng. rhamnine.] Chem.: C23H28O14 (?). A yellow coloring matter, obtained by boiling coarsely-ground Persian berries with alcohol, filtering, and allowing the filtrate to crystallize. It forms tufts of pale-yellow shining crystals, soluble in water and alcohol, insoluble in ether. xăn-thor-rhi-zą, subst. [Pref. xuntho-, and Gr. rhiza =a root.] Bot.: A genus of Ranunculacere, tribe Actwee, Sepals five, deciduous; petals five, much smaller than the sepals; ovaries five to fifteen, each with xanthoxyl on Hardne of fibers, 25; luster, silky, sometimes earthy; color, brownish-yellow to brownish red; in earthy forms, colors various. Composition: Sesquioxide of iron, 81.6; water, 18.4=100, whence the formula Fe2O3,2НО. 2. The same as COPIAPITE (q. v.).