Black Stem Rust vs coast amaranth

Puccinia graminis compared with Amaranthus pumilus

Key Differences

Black Stem Rust is Not Evaluated while coast amaranth is Extinct.

Taxonomic Classification

Rank	Black Stem Rust	coast amaranth
Kingdom	Fungi (菌界)	Plantae (植物)
Phylum	Basidiomycota (担子菌門)	Magnoliophyta (被子植物門)
Class	Pucciniomycetes (Pucciniomycetes)	Magnoliopsida (モクレン綱)
Order	Pucciniales (サビキン目)	Caryophyllales (ナデシコ目)
Family	Pucciniaceae	Amaranthaceae
Genus	Puccinia	Amaranthus
Species	Puccinia graminis	Amaranthus pumilus

Conservation Status

Black Stem Rust

NE — Not Evaluated

coast amaranth

EX — Extinct

Physical Characteristics

Attribute	Black Stem Rust	coast amaranth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Stem Rust

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Peru).

coast amaranth

Habitat

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

Range

Found in Japan.

Black Stem Rust

The Black Stem Rust (Puccinia graminis) is a species in the genus Puccinia. Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

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.