Common corncockle vs Green Feather Algae

Agrostemma githago compared with Caulerpa sertularioides

Key Differences

• Common corncockle is Critically Endangered while Green Feather Algae is Not Evaluated.

Taxonomic Classification

Rank	Common corncockle	Green Feather Algae
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Chlorophyta (Chlorophyta)
Class	Magnoliopsida (Dicots)	Ulvophyceae (Ulvophyceae)
Order	Caryophyllales (Caryophyllales)	Bryopsidales (Bryopsidales)
Family	Caryophyllaceae	Caulerpaceae
Genus	Agrostemma	Caulerpa
Species	Agrostemma githago	Caulerpa sertularioides

Evolutionary Relationship

Common corncockle and Green Feather Algae share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Common corncockle

CR — Critically Endangered

Green Feather Algae

NE — Not Evaluated

Physical Characteristics

Attribute	Common corncockle	Green Feather Algae
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common corncockle

Habitat

Found across multiple habitat types including montane grasslands and shrublands, tropical and subtropical moist broadleaf forests, and temperate coniferous forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Lesotho), Asia (7 countries), Europe (24 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Brazil, Chile). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Green Feather Algae

Habitat

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

Range

Distributed across Brazil and Norway.

Common corncockle

<em>Agrostemma githago</em>, commonly known as common corncockle, is an annual flowering plant in the family Caryophyllaceae. Once a widespread weed of cereal crops across Europe, Asia, and beyond, this species is now Critically Endangered on the IUCN Red List due to the dramatic decline caused by modern agricultural practices, particularly improved grain cleaning and herbicide use. Corncockle is a tall, slender plant covered in silky white hairs, bearing large, solitary pink to purple flowers with distinctive dark veining. Its seeds contain toxic saponin compounds called githagins, which historically contaminated grain supplies. The species now survives primarily in wildflower conservation areas, seed banks, and traditional farmland conservation schemes. It typically grows in open, disturbed arable soils with full sun exposure. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 2 countries:

🇧🇷 Brazil 🇳🇴 Norway