Hazel Tree Types, Pictures and Species of Corylus
|Picture of a Hazelnut Tree|
Hazel Tree (Corylus colurna)
Turkish Hazel Leaf (Corylus colurna)
Hazel trees (Corylus) are a genus of 26 species, mainly deciduous trees and some large shrubs, that are all native to the temperate regions of the northern hemisphere. These trees are also commonly known by their seed, a edible nut called a "Hazelnut", or a "cobnut". The trees may be commonly referred to as "Hazelnut Trees". See List of Hazel Vernacular Names for common names of the Corylus species in other languages.
Hazel nuts, (Hazelnuts)
The nuts of all species of Hazel (Corylus) are edible, however the species (Corylus avellana) is grown the most due to its higher production rate, and has many Cultivars. Hazelnuts can also be known as "Cobnuts" or "filbert nuts" .
Hazelnuts are used in confectionery to make some pralines, in chocolate for some chocolate bars (such as Cadbury's), and in some hazelnut paste products (such as Nutella). In the United States, hazelnut butter is being promoted as a more nutritious spread than its peanut butter counterpart, as Hazelnuts contain significant amounts of thiamine and vitamin B6, as well as smaller amounts of other B vitamins. Hazelnuts are rich in protein and unsaturated fat.
Identification of Hazel Trees;
The shape and structure of the involucre, nut and also the growth habit (whether a tree or a shrub), are important, as well as the leaves in the identification of the different species of Corylus (Hazel). See List of Hazel Tree Species.
Hazel tree species have simple, rounded leaves with a double serrated margin. Hazel flowers are produced very early in spring before the leaves, and are monoecious, with single-sex catkins, the male catkins are pale yellow and 5 ↔ 12 cm long, and the female ones are very small and largely concealed in the buds, with only the bright-red, 1 ↔ 3mm long styles being visible. Hazel seeds are nuts 1 ↔ 2.5cm long and 1 ↔ 2cm in diameter, surrounded by an involucre (husk) which partly to fully encloses the nut, (Hazelnut).
Facts about the Corylus Genus of Trees
- Genus Latin Scientific Name = Corylus
- Genus Name Pronunciation: KOR-ih-lus
- Genus Name Meaning: From the Greek "krylos", meaning Hazelnut.
- Genus Common Names = Hazel, Hazelnut, see List of Hazel Vernacular Names.
- Number of Taxa in the Corylus Genus = 26, See List of Hazel Cultivars.
List of Hazelnut Trees, Corylus Genus, All known species, taxa types, organized by scientific Latin botanical name first and common names second
|Botanical Tree Name||Common Tree Name|
|Corylus americana||American Hazel, Hazelnut, American filbert|
|Corylus avellana||Common Hazel|
|Corylus avellana var. avellana||Distribution: Europe to Caucasus|
|Corylus avellana var. pontica||Distribution: N. Turkey, W. Transcaucasus|
|Corylus chinensis||Chinese Hazel|
|Corylus colchica||Colchican Filbert|
|Corylus colurna||Turkish Hazel|
|Corylus × colurnoides||Trazel |
|Corylus cornuta||Beaked Hazel|
|Corylus cornuta ssp. californica||California Hazel, |
Distribution: British Columbia to California
|Corylus cornuta ssp. cornuta||Distribution: Canada, N. and E. U.S.A.|
|Corylus fargesii||Farges' Hazel|
|Corylus ferox||Himalayan Hazel|
|Corylus ferox var. ferox||Himalayan Hazel, Distribution: C. Himalaya to Myanmar and Tibet|
|Corylus ferox var. thibetica||Tibetan Hazel |
Distribution: C. China
|Corylus heterophylla||Asian Hazel, Siberian Hazel|
|Corylus heterophylla var. heterophylla||Distribution: SE. Siberia, S. Russian Far East, E. Mongolia, N. and NE. China, Korea, N. & C. Japan|
|Corylus heterophylla var. sutchuensis||Distribution: China (Yunnan, Sichuan, Guizhou, Hubei, Hunan)|
|Corylus jacquemontii||Jacquemont's Hazel|
|Corylus maxima||Filbert, Giant Filbert, European Filbert|
|Corylus potaninii||Distribution: SC. China, (Szechuan; Hupeh; Kweichau; Yunnan.)|
|Corylus sieboldiana||Asian Beaked Hazel|
|Corylus sieboldiana var. mandshurica||Manchurian Hazelnut |
Distribution: SE. Siberia to N. & C. Japan
|Corylus sieboldiana var. sieboldiana||Distribution: S. Korea, Japan|
|Corylus wangii||Wang's Hazel|
|Corylus wulingensis||Distribution: China (Hunan)|
|Corylus yunnanensis||Yunnan Hazel|
List of Tree Names last up-dated on
- 'Contorta' - (Corylus avellana) Corkscrew Hazel, Contorted Filbert, Harry Lauder's Walking Stick
- 'Delle Langhe'
- 'Halls Giant'
- 'Kent Cob'
- 'Tonda Gentile'
- 'Tonda di Giffoni'
- 'Tonda Romana'
- 'Wanliss Pride'
Cymraeg: Cneuen gyll
norsk (bokmål): Hassel
norsk (nynorsk): Hassel