Knollen-Zypergras vs Variable flatsedge

Cyperus rotundus compared with Cyperus difformis

Taxonomic Classification

Rank	Knollen-Zypergras	Variable flatsedge
Kingdom same	Plantae (Pflanzen)	Plantae (Pflanzen)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Liliopsida (Monocots)	Liliopsida (Monocots)
Order same	Poales (Süßgrasartige)	Poales (Süßgrasartige)
Family same	Cyperaceae	Cyperaceae
Genus same	Cyperus	Cyperus
Species	Cyperus rotundus	Cyperus difformis

Evolutionary Relationship

Knollen-Zypergras and Variable flatsedge share a common ancestor at the Genus level: Cyperus.

Conservation Status

Knollen-Zypergras

LC — Least Concern

Variable flatsedge

LC — Least Concern

Physical Characteristics

Attribute	Knollen-Zypergras	Variable flatsedge
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Knollen-Zypergras

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (18 countries), Asia (20 countries), Europe (11 countries), North America (12 countries), Oceania and the Pacific (14 countries), and South America (7 countries).

Variable flatsedge

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 6 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (9 countries), Asia (10 countries), Europe (9 countries), North America (6 countries), Oceania and the Pacific (5 countries), and South America (6 countries).

Shared Countries

Both species can be found in 35 countries:

🇧🇪 Belgium 🇧🇴 Bolivia 🇧🇷 Brazil 🇧🇮 Burundi 🇨🇲 Cameroon 🇨🇱 Chile 🇨🇳 China 🇨🇴 Colombia 🇰🇲 Comoros 🇪🇬 Egypt 🇫🇯 Fiji 🇫🇷 France 🇬🇲 Gambia 🇬🇳 Guinea 🇮🇳 India 🇯🇲 Jamaica 🇱🇦 Laos 🇲🇬 Madagascar 🇲🇭 Marshall Islands 🇲🇺 Mauritius 🇲🇽 Mexico 🇫🇲 Micronesia 🇲🇲 Myanmar 🇳🇱 Netherlands 🇳🇮 Nicaragua 🇵🇼 Palau 🇵🇪 Peru 🇵🇹 Portugal 🇸🇬 Singapore 🇸🇧 Solomon Islands 🇪🇸 Spain 🇹🇼 Taiwan 🇬🇧 United Kingdom 🇺🇸 United States 🇻🇳 Vietnam