Common filbert vs ci zhen

Corylus avellana compared with Corylus ferox

Taxonomic Classification

Rank	Common filbert	ci zhen
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (木兰植物门)	Magnoliophyta (木兰植物门)
Class same	Magnoliopsida (木兰纲)	Magnoliopsida (木兰纲)
Order same	Fagales (壳斗目)	Fagales (壳斗目)
Family same	Betulaceae	Betulaceae
Genus same	Corylus	Corylus
Species	Corylus avellana	Corylus ferox

Evolutionary Relationship

Common filbert and ci zhen share a common ancestor at the Genus level: Corylus.

Conservation Status

Common filbert

LC — Least Concern

ci zhen

LC — Least Concern

Physical Characteristics

Attribute	Common filbert	ci zhen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common filbert

Habitat

Inhabits Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Widely distributed across Asia (Cyprus, Iraq), Europe (7 countries), North America (Canada, United States), and South America (Brazil).

ci zhen

Habitat

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

Common filbert

<em>Corylus avellana</em> is a deciduous shrub or small tree in the family Betulaceae, order Fagales, commonly known as the common hazel or common filbert. The species is classified as Least Concern on the IUCN Red List, with widespread and stable populations across its native and introduced range. <em>Corylus avellana</em> is native to Europe and western Asia and has been introduced to parts of North America and South America. It is particularly associated with temperate deciduous woodlands, hedgerows, and scrubland across the Mediterranean forests and the Palearctic realm. The species typically forms a multi-stemmed shrub with broad, rounded leaves and catkins that emerge in late winter before the leaves appear, representing one of the earliest flowering events of the temperate year. Hazel nuts produced by this species are an important food source for woodland wildlife including squirrels, dormice, and woodpeckers. The species has been cultivated for centuries for nut production and coppicing. Biological traits of this species remain poorly documented in the scientific literature.