Coco yam vs Common Kidney-Vetch

Colocasia esculenta compared with Anthyllis vulneraria

Key Differences

Coco yam is Not Evaluated while Common Kidney-Vetch is Vulnerable.

Taxonomic Classification

Rank	Coco yam	Common Kidney-Vetch
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Lepidoptera (Butterflies & Moths)	Fabales (Legumes & Allies)
Family	Noctuidae	Fabaceae
Genus	Colocasia	Anthyllis
Species	Colocasia esculenta	Anthyllis vulneraria

Conservation Status

Coco yam

NE — Not Evaluated

Common Kidney-Vetch

VU — Vulnerable

Physical Characteristics

Attribute	Coco yam	Common Kidney-Vetch
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coco yam

Habitat

Inhabits flooded grasslands and savannas within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (30 countries), Asia (6 countries), Europe (9 countries), North America (8 countries), Oceania and the Pacific (8 countries), and South America (6 countries).

Common Kidney-Vetch

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 6 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Libya), Asia (Japan), Europe (9 countries), North America (Canada, United States), and Oceania and the Pacific (Australia). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Coco yam

Coco Yam (Colocasia esculenta), also widely known as Taro, is a pantropical herbaceous plant in the family Araceae, cultivated as a food crop for more than 10,000 years and considered one of humanity's oldest cultivated plants. The species grows from large starchy corms and produces broad, sagittate leaves with distinctive water-repellent surfaces—an adaptation that has earned the plant its association with the lotus effect in traditional culture. Corms, cormels, and young leaves are all edible after thorough cooking, which is essential to neutralise the calcium oxalate crystals that cause intense irritation when raw. Originating in South and Southeast Asia, Colocasia esculenta has been dispersed across tropical Africa, the Pacific Islands, the Caribbean, and the Americas through centuries of agricultural exchange and migration. It thrives in wet or waterlogged soils, being particularly associated with paddy cultivation, irrigation channels, and swampy ground, though drought-tolerant cultivars exist. The species is a dietary staple in Hawaii, where it is the basis of poi; in West Africa, where it is boiled or pounded; and across the Pacific Islands, where it sustains subsistence communities. Given its widespread cultivation and genetic diversity represented across thousands of landraces, IUCN has not formally evaluated its conservation status. The species is not considered at risk.

Common Kidney-Vetch

Common Kidney-Vetch (<em>Anthyllis vulneraria</em>) is a flowering plant in the legume family Fabaceae, assessed as Vulnerable on the IUCN Red List due to habitat degradation and agricultural intensification across parts of its range. It is widely distributed across Africa (Libya), Asia (Japan), Europe (nine countries), North America (Canada and the United States), and Oceania (Australia), occupying six distinct biome types and occurring within the Indomalayan and Oceanian biogeographic realms. The species typically grows in dry, calcareous grasslands, coastal cliffs, sand dunes, and rocky slopes, often favoring nutrient-poor soils. It is an important larval food plant for certain butterfly species, particularly the Small Blue butterfly in Europe, and contributes to soil fertility through nitrogen fixation via root nodules. Its cheerful yellow, orange, or red flower heads make it a recognizable component of chalk and limestone grassland communities. Biological traits of this species remain poorly documented in the scientific literature.