Cactus-apple vs coast amaranth

Opuntia engelmannii compared with Amaranthus pumilus

Key Differences

• Cactus-apple is Least Concern while coast amaranth is Extinct.

Taxonomic Classification

Rank	Cactus-apple	coast amaranth
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Caryophyllales (Caryophyllales)	Caryophyllales (Caryophyllales)
Family	Cactaceae	Amaranthaceae
Genus	Opuntia	Amaranthus
Species	Opuntia engelmannii	Amaranthus pumilus

Evolutionary Relationship

Cactus-apple and coast amaranth share a common ancestor at the Order level: Caryophyllales. (Caryophyllales)

Conservation Status

Cactus-apple

LC — Least Concern

coast amaranth

EX — Extinct

Physical Characteristics

Attribute	Cactus-apple	coast amaranth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cactus-apple

Habitat

Inhabits tropical and subtropical grasslands and savannas within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (5 countries), Europe (4 countries), and Oceania and the Pacific (Australia).

coast amaranth

Habitat

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

Range

Found in Japan.

Cactus-apple

The Cactus-apple (Opuntia engelmannii) is a species in the genus Opuntia. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical grasslands and savannas within the Afrotropic biogeographic realm.

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.