Baytop's Onion vs Common brassbuttons

Allium baytopiorum compared with Cotula coronopifolia

Key Differences

• Baytop's Onion is Critically Endangered while Common brassbuttons is Not Evaluated.

Taxonomic Classification

Rank	Baytop's Onion	Common brassbuttons
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class	Liliopsida (Monocots)	Magnoliopsida (Dicots)
Order	Asparagales (Asparagales)	Asterales (Daisies & Sunflowers)
Family	Amaryllidaceae	Asteraceae (Daisy Family)
Genus	Allium	Cotula
Species	Allium baytopiorum	Cotula coronopifolia

Evolutionary Relationship

Baytop's Onion and Common brassbuttons share a common ancestor at the Phylum level: Magnoliophyta. (Flowering Plants)

Conservation Status

Baytop's Onion

CR — Critically Endangered

Common brassbuttons

NE — Not Evaluated

Physical Characteristics

Attribute	Baytop's Onion	Common brassbuttons
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Baytop's Onion

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Common brassbuttons

Habitat

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

Range

Widely distributed across Africa (Morocco), Asia (Japan), Europe (15 countries), North America (Canada, Mexico, United States), and South America (6 countries).

Baytop's Onion

The Baytop's Onion (Allium baytopiorum) is a species in the genus Allium. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Common brassbuttons

Common brassbuttons (<em>Cotula coronopifolia</em>) is a small annual or perennial herb with a remarkably broad global distribution, occurring across Africa, Asia, Europe, North America, and South America. This species typically inhabits diverse terrestrial environments, often colonizing wet or damp areas such as salt marshes, mudflats, stream margins, and disturbed roadsides. The common brassbuttons has not been formally evaluated on the IUCN Red List. A member of the family Asteraceae, it produces distinctive button-like yellow flowerheads that give the species its common name. Originally native to southern Africa, the species has spread widely and is considered naturalized or invasive in many regions outside its native range. It often thrives in seasonally flooded habitats and tolerates saline soils, demonstrating considerable ecological flexibility. Biological traits of this species remain poorly documented in the scientific literature.