arrowroot vs coast amaranth

Thalia geniculata compared with Amaranthus pumilus

Key Differences

arrowroot is Least Concern while coast amaranth is Extinct.

Taxonomic Classification

Rank	arrowroot	coast amaranth
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Thaliacea (Thaliacea)	Magnoliopsida (Dicots)
Order	Salpida (Salpida)	Caryophyllales (Caryophyllales)
Family	Salpidae	Amaranthaceae
Genus	Thalia	Amaranthus
Species	Thalia geniculata	Amaranthus pumilus

Conservation Status

arrowroot

LC — Least Concern

coast amaranth

EX — Extinct

Physical Characteristics

Attribute	arrowroot	coast amaranth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arrowroot

Habitat

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

Range

Widely distributed across Africa (Guinea), Asia (India, Taiwan), North America (Cuba), Oceania and the Pacific (Australia), and South America (Brazil, Colombia).

coast amaranth

Habitat

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

Range

Found in Japan.

arrowroot

The Arrowroot, Thalia geniculata, is a species. It is currently assessed as least concern on the IUCN Red List. Native to Africa and Asia and North America, inhabiting ecosystems characteristic of the region.

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.