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St. Ignatius bean

Strychnos ignatii

Also called Ignatius Bean, Saint Ignatius Beans, St. Ignatius' Bean

St. Ignatius bean
Photo: Franz Eugen Köhler, Public domain

St. Ignatius bean is a woody climbing vine (liana) from wet tropical forests of southern China and Southeast Asia, known for its seeds rich in strychnine. It is not a common garden or houseplant, so care is rarely needed outside botanical collections.

Family
Loganiaceae (Logani family)
Grows as
Tree
Light
Bright indirect
Water
Keep the soil evenly moist during growth and reduce slightly in cooler months.
Soil
Well-drained, humus-rich tropical potting mix.
Temperature
20–30 °C; protect below 13 °C
How easy
Hard
Safety
Toxic: Seeds and other parts contain strychnine and related alkaloids, which can cause fatal poisoning.
Edible
Yes, some parts
Native range
China (Yunnan to Guangdong) to W. & C. Malesia
Climate
wet tropical

About

Strychnos ignatii is a tree in the family Loganiaceae, native to the Philippines, particularly in Catbalogan and parts of China. The plant was first described by the Moravian (Czech) Jesuit working in the Philippines, brother Georg Kamel who named its seeds "the beans of St. Ignatius", in honour of the founder of his religious order.

Other Strychnos plants

Strychnos icaja · Strychnine tree · Strychnine Tree · Green Monkey Orange · Natal orange · Strychnine

Text excerpted from the Wikipedia article Strychnos ignatii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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