coast amaranth vs Java-bean

Amaranthus pumilus compared with Senna obtusifolia

Key Differences

• coast amaranth is Extinct while Java-bean is Least Concern.

Taxonomic Classification

Rank	coast amaranth	Java-bean
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (被子植物門)	Magnoliophyta (被子植物門)
Class same	Magnoliopsida (モクレン綱)	Magnoliopsida (モクレン綱)
Order	Caryophyllales (ナデシコ目)	Fabales (マメ目)
Family	Amaranthaceae	Fabaceae
Genus	Amaranthus	Senna
Species	Amaranthus pumilus	Senna obtusifolia

Evolutionary Relationship

coast amaranth and Java-bean share a common ancestor at the Class level: Magnoliopsida. (モクレン綱)

Conservation Status

coast amaranth

EX — Extinct

Java-bean

LC — Least Concern

Physical Characteristics

Attribute	coast amaranth	Java-bean
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

coast amaranth

Habitat

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

Range

Found in Japan.

Java-bean

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (22 countries), Asia (13 countries), Europe (9 countries), North America (5 countries), Oceania and the Pacific (10 countries), and South America (5 countries).

coast amaranth

Coast amaranth (Amaranthus pumilus) is an annual herb in the family Amaranthaceae, native to the Atlantic and Gulf coasts of the eastern United States, where it once grew on coastal foredunes, beach strand, and shell-hash substrates above the high tide line from New York south to South Carolina. It is a low-growing, fleshy plant with small, rounded leaves and inconspicuous green flowers typical of the genus. Coast amaranth is assessed as Extinct in the Wild by the IUCN, as it has not been reliably documented from wild populations since the mid-20th century; the last confirmed collections date to the 1960s. The species' decline and likely extinction resulted from intense human pressure on Atlantic coastal habitats through shoreline development, beach stabilisation, vehicular traffic on beaches, and increased storm frequency disrupting pioneer dune vegetation. It is federally listed as Threatened in the United States, though this listing predates confirmed extinction in the wild. A small number of ex-situ accessions may exist in botanical garden collections. Genetic material and seed banking efforts represent the only remaining conservation options for this critically reduced species.

Shared Countries

Both species can be found in 1 countries:

🇯🇵 Japan