Physostigma venenosum
Calabar Bean · Kalabarbønne
Museum-quality giclée print on 189gsm Enhanced Matte paper. Archival, fade-resistant inks ensure years of vibrant display. The matte finish eliminates glare and gives a premium, tactile quality.
Original illustration from Köhler's Medizinal-Pflanzen (1887), carefully colour-corrected from high-resolution library scans.
Produced on demand — nothing is printed until you order.
Each poster includes a scientifically verified description of the plant's medicinal properties, based on EMA and WHO monographs.
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$35
About this plant
The seeds of Physostigma venenosum contain physostigmine, a reversible acetylcholinesterase inhibitor first isolated in 1864. The Efik people of Old Calabar used it as an ordeal poison; survival was considered proof of innocence. In 1876, physostigmine became foundational in ophthalmology for glaucoma treatment. Its alkaloid inspired the entire class of carbamate insecticides.
