Brook Floater vs Climbing Flat-bean

Alasmidonta varicosa compared with Dalbergia obovata

Key Differences

Brook Floater is Vulnerable while Climbing Flat-bean is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Climbing Flat-bean
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Bivalvia (Bivalvia)	Magnoliopsida (Dicots)
Order	Unionida (Unionida)	Fabales (Legumes & Allies)
Family	Unionidae	Fabaceae
Genus	Alasmidonta	Dalbergia
Species	Alasmidonta varicosa	Dalbergia obovata

Conservation Status

Brook Floater

VU — Vulnerable

Climbing Flat-bean

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Climbing Flat-bean
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Climbing Flat-bean

Habitat

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

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

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.