Climbing Flat-bean vs Trac

Dalbergia obovata compared with Dalbergia cochinchinensis

Key Differences

• Climbing Flat-bean is Least Concern while Trac is Critically Endangered.

Taxonomic Classification

Rank	Climbing Flat-bean	Trac
Kingdom same	Plantae (thực vật)	Plantae (thực vật)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Fabales (Bộ Đậu)	Fabales (Bộ Đậu)
Family same	Fabaceae	Fabaceae
Genus same	Dalbergia	Dalbergia
Species	Dalbergia obovata	Dalbergia cochinchinensis

Evolutionary Relationship

Climbing Flat-bean and Trac share a common ancestor at the Genus level: Dalbergia.

Conservation Status

Climbing Flat-bean

LC — Least Concern

Trac

CR — Critically Endangered

Physical Characteristics

Attribute	Climbing Flat-bean	Trac
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Climbing Flat-bean

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Trac

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Climbing Flat-bean

Climbing Flat Bean, Vigna unguiculata subsp. sesquipedalis, commonly known as the Yard-long Bean or Asparagus Bean, is a vigorous climbing legume in the family Fabaceae widely cultivated across tropical and subtropical Asia for its extraordinarily long, edible pods. The pods, reaching up to 60–100 cm in length, are harvested when young and tender and are used extensively in Chinese, Southeast Asian, and South Asian cuisine. The species climbs trellises and poles using tendril-like, twining stems, producing purplish-white flowers that develop into the characteristic pendulous, slender bean pods. Like other Vigna species, it fixes atmospheric nitrogen through symbiotic bacteria in root nodules, improving soil fertility. Climbing Flat Bean is a warm-season crop requiring full sun, high temperatures, and adequate moisture, making it well suited to humid tropical and monsoon climates. It is an important food crop providing protein and vitamins for rural communities across Asia and is cultivated as a commercial vegetable in many tropical countries. The species is also grown in tropical America and Africa. Being a domesticated cultivar complex, its conservation status is not formally assessed in terms of wild populations, though the preservation of genetic diversity in cultivated landraces is an agricultural priority.