Physostigma
Structural Formula Vector Image
Title: Physostigma
Additional Names: Calabar bean; ordeal bean; chop nut; split nut
Literature References: Dried ripe seed of Physostigma venenosum Balf., Leguminosae. Poisonous! Habit. West Africa (near mouths of Niger and Old Calabar Rivers); introduced into India and Brazil. Constit. 0.15-0.3% alkaloids consisting of physostigmine (eserine), physovenine, eseridine, eseramine, phytosterol.

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