Plant · GBIF taxon 2871520
Amorphophallus konjac
Amorphophallus konjacAlso known as Devil's Tongue, Voodoo Lily, Snake Palm, Konnyaku Potato
Konjac emerges each spring from an enormous underground corm, either sending up a single umbrella-like leaf on a mottled stalk or producing a dramatic, deep-maroon inflorescence. The bloom produces a powerful odor of rotting meat, warming its spathe to vaporize volatile sulfur compounds that lure carrion-seeking blowflies and beetles for pollination. Widely cultivated across East and Southeast Asia, its dense corm yields glucomannan, a soluble dietary fiber transformed into traditional jellies and noodles through extensive alkaline processing.
AroidCarrion MimicCultivated

Licensed referenceWalter Hood Fitch / Public domain · cc0
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Autotrophic (photosynthetic)
Predators
- Wild boars
- Rodents
ThreatsOvercollection of wild populations and deforestation
HabitatsSubtropical forest understories, secondary scrub, and agricultural fields
Life spanPerennial (decades via persistent corm)
Size / weightNot available
Classification
- OrderAlismatales
- FamilyAraceae
- GenusAmorphophallus
- SpeciesAmorphophallus konjac
Range data is not available yet.
Interaction riskHigh
- Low
- Moderate
- High
- Very high
- Why interaction risk is high
- Raw tissues contain needle-like calcium oxalate crystals; avoid touching broken sap and never ingest raw.
- Why it is dangerous
- Plant cells contain sharp calcium oxalate raphide crystals that mechanically pierce mucous membranes, causing immediate burning, severe swelling of the mouth and throat, and dermal dermatitis.
- How to recognize a risky encounter
- Recognized by a solitary umbrella-like divided leaf atop a mottled green-and-white stem, or a dark maroon ruffled spathe enclosing a deep purple spadix.
- What to do
- Wear protective gloves when dividing corms or pruning damaged stems, and keep all raw plant parts away from children and pets.
Responsible observation
- Odor alert: Blooming inflorescences generate an intense rotten meat odor for several days.
- Handling precautions: Wear gloves when peeling or planting fresh corms to avoid skin irritation from sap.
- Culinary safety: Never taste raw corms or foliage; traditional preparation requires boiling with slaked lime.
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