coast amaranth vs Common iceplant

Amaranthus pumilus compared with Mesembryanthemum crystallinum

Key Differences

• coast amaranth is Extinct while Common iceplant is Not Evaluated.

Taxonomic Classification

Rank	coast amaranth	Common iceplant
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	Amaranthaceae	Aizoaceae
Genus	Amaranthus	Mesembryanthemum
Species	Amaranthus pumilus	Mesembryanthemum crystallinum

Evolutionary Relationship

coast amaranth and Common iceplant share a common ancestor at the Order level: Caryophyllales. (Caryophyllales)

Conservation Status

coast amaranth

EX — Extinct

Common iceplant

NE — Not Evaluated

Physical Characteristics

Attribute	coast amaranth	Common iceplant
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.

Common iceplant

Habitat

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

Range

Widely distributed across Asia (Cyprus, India, Turkey), Europe (13 countries), North America (Mexico, United States), and South America (Chile, Ecuador).

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.

Common iceplant

<em>Mesembryanthemum crystallinum</em>, commonly known as the common iceplant, is a succulent annual or short-lived perennial in the family Aizoaceae. Its conservation status has not been formally evaluated by the IUCN. The species is distributed across Asia, Europe, North America, and South America, with a wide global footprint that includes both native populations and naturalized occurrences. It typically inhabits coastal and arid environments, saline soils, disturbed ground, and rocky slopes where competition from other vegetation is limited. The plant is named for the glistening bladder-like cells on its surface that resemble ice crystals. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.