Bog Bonnet vs coast amaranth

Mycena concolor compared with Amaranthus pumilus

Key Differences

Bog Bonnet is Vulnerable while coast amaranth is Extinct.

Taxonomic Classification

Rank	Bog Bonnet	coast amaranth
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Basidiomycota (Club Fungi)	Magnoliophyta (Flowering Plants)
Class	Agaricomycetes (Mushrooms)	Magnoliopsida (Dicots)
Order	Agaricales (Gilled Mushrooms)	Caryophyllales (Caryophyllales)
Family	Mycenaceae	Amaranthaceae
Genus	Mycena	Amaranthus
Species	Mycena concolor	Amaranthus pumilus

Conservation Status

Bog Bonnet

VU — Vulnerable

coast amaranth

EX — Extinct

Physical Characteristics

Attribute	Bog Bonnet	coast amaranth
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bog Bonnet

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

coast amaranth

Habitat

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

Range

Found in Japan.

Bog Bonnet

The Bog Bonnet (Mycena concolor) is a species in the genus Mycena. It is currently classified as Vulnerable on the IUCN Red List. Distributed across Denmark, Norway, and Sweden.

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.