Common Onion vs Niger Delta Red Colobus

Allium cepa compared with Piliocolobus epieni

Key Differences

• Common Onion is Not Evaluated while Niger Delta Red Colobus is Critically Endangered.

Taxonomic Classification

Rank	Common Onion	Niger Delta Red Colobus
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (สัตว์มีแกนสันหลัง)
Class	Liliopsida (Monocots)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Asparagales (อันดับหน่อไม้ฝรั่ง)	Primates (อันดับวานร)
Family	Amaryllidaceae	Cercopithecidae (Old World Monkeys)
Genus	Allium	Piliocolobus
Species	Allium cepa	Piliocolobus epieni

Conservation Status

Common Onion

NE — Not Evaluated

Niger Delta Red Colobus

CR — Critically Endangered

Physical Characteristics

Attribute	Common Onion	Niger Delta Red Colobus
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Onion

Habitat

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

Range

Widely distributed across Africa (8 countries), Asia (4 countries), Europe (23 countries), North America (United States), Oceania and the Pacific (Australia), and South America (5 countries).

Niger Delta Red Colobus

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Onion

<em>Allium cepa</em> is a biennial or perennial bulbous herb in the family Amaryllidaceae, cultivated globally as one of the most widely used culinary vegetables. Its exact wild origin remains debated, though it is thought to originate from Central Asia. Today, the species is grown across Africa, Asia, Europe, North America, South America, and Oceania, adapting to diverse agricultural climates and soil types. Common onion typically grows in grasslands, agricultural fields, wetlands, and cultivated habitats. The plant forms underground bulbs that store nutrients and are harvested for food. It produces distinctive hollow, cylindrical leaves and globular flower heads. Onion is valued for its sulfur-containing compounds, which contribute to its characteristic pungent aroma and flavor, as well as its antimicrobial and antioxidant properties. Its conservation status has not been formally evaluated by the IUCN due to its extensive cultivation and absence of wild population concern. Biological traits including average lifespan, length, weight, and dietary ecology remain poorly documented in standardized wildlife databases appropriate for a cultivated crop species. <em>Allium cepa</em> is among the most economically significant vegetables worldwide, grown in over 175 countries.