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Corylus jacquemontii; photograph Dinesh Valke from Thane, India, CC BY-SA 2.0, via Wikimedia Commons CC BY-SADinesh Valke from Thane, India, CC BY-SA 2.0, via Wikimedia Commons

Corylus jacquemontii Decne.

Indian Tree Hazel; Jacquemont's Hazel; Turkish Hazelnut

Betulaceae · Nepal, West Himalaya

No habitat climate
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Corylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia CommonsCorylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia CommonsCorylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia CommonsCorylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia CommonsCorylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia CommonsCorylus jacquemontii, photograph Vinayaraj, CC BY-SA 4.0, via Wikimedia Commons 9 photographs ›

Summary

Corylus jacquemontii (Jacquemont's hazelnut or Indian tree hazel) is a species of hazel, found in Asia, within the Himalayas and from Afghanistan through to W. Nepal. It is a small tree or shrub, with grey bark, ovate or obovate (teardrop-shaped) leaves, small flowers and small edible nuts, grouped in small clusters.

Quoted from Wikipedia, "Corylus jacquemontii", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: 15 in-range records, none placed to within 10 km. 15 of the 15 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeNepal, West Himalaya · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker34.129, 75.019 · in the densest population, 8 records (53% of those in range)
Kew's description“tree” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 15 georeferenced records inside the native range; the map shows only the 7 openly licensed ones, which alone would put the marker 233 km away. 6 records outside the WCVP native range not used. No climate across the range is derived for this species. 15 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 15 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Corylus jacquemontii, photograph 1did not loadCorylus jacquemontii, photograph 2did not loadCorylus jacquemontii, photograph 3did not loadCorylus jacquemontii, photograph 4did not loadCorylus jacquemontii, photograph 5did not loadCorylus jacquemontii, photograph 6did not load

Photographs: Vinayaraj, CC BY-SA 4.0, via Wikimedia Commons (6).

Other Corylus 12 in the reference

Corylus americana Corylus americana American hazelnut Photo: CC BY, Shelby Lyn SandersCorylus avellana Corylus avellana Hazel Photo: CC0, author not statedCorylus chinensis Corylus chinensis Chinese Hazlenut Photo: CC BY, Jean-Pol GRANDMONTCorylus colurna Corylus colurna Turkish hazel Photo: CC BY, Fiona Chan-Cary Corylus × colurnoides Betulaceae Corylus cornuta Corylus cornuta Beaked hazel Photo: CC BY, Rachel StringhamCorylus fargesii Corylus fargesii Betulaceae Photo: CC BY, Tie Guy II on FlickrCorylus ferox Corylus ferox Himalayan hazel Photo: CC BY, Kristof ZyskowskiCorylus heterophylla Corylus heterophylla Siberian filbert Photo: CC BY, Tatyana PetrenkoCorylus maxima Corylus maxima Filbert Photo: CC BY, Dawid JuszczakCorylus sieboldiana Corylus sieboldiana Japanese hazel Photo: CC BY, Станислав ЧувановCorylus yunnanensis Corylus yunnanensis Yunnan Hazel Photo: CC0, Daderot

Names & registers

Also known as Corylus colurna var. lacera; Corylus lacera; Corylus tiliacea. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipedia

The record

Family
Betulaceae
Described by
Decne.
Native to
Nepal, West Himalaya
Wild records
15 in range · 7 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-21
GBIF species record gbif.species answeredasked 2026-10-21
GBIF synonyms gbif.synonyms answeredasked 2026-10-21
GBIF common names gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate nothing to reportasked 2026-10-2115 in-range records, none placed to within 10 km
Wikidata wikidata answeredasked 2026-10-21
Wikipedia wikipedia answeredasked 2026-10-21
iNaturalist taxon inat.taxon not asked
iNaturalist photographs, wild inat.photos.wild not asked
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media nothing to reportasked 2026-10-21
Wikimedia Commons commons answeredasked 2026-10-21
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 6 datasets via GBIF.org; each carries its own licence.

Cultifolio

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