coast amaranth vs Cây So Tua

Amaranthus pumilus compared with Alstonia macrophylla

Key Differences

• coast amaranth is Extinct while Cây So Tua is Least Concern.

Taxonomic Classification

Rank	coast amaranth	Cây So Tua
Kingdom same	Plantae (thực vật)	Plantae (thực vật)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Caryophyllales (Bộ Cẩm chướng)	Gentianales (Bộ Long đởm)
Family	Amaranthaceae	Apocynaceae
Genus	Amaranthus	Alstonia
Species	Amaranthus pumilus	Alstonia macrophylla

Evolutionary Relationship

coast amaranth and Cây So Tua share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

coast amaranth

EX — Extinct

Cây So Tua

LC — Least Concern

Physical Characteristics

Attribute	coast amaranth	Cây So Tua
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.

Cây So Tua

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and deserts and xeric shrublands within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Congo (DRC), Seychelles, Sri Lanka, and United States.

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.