Castanea henryi, Henry chestnut, Henry's chestnut, or Chinese chinquapin (a name it shares with Castanea seguinii), pearl chestnut, and in , zhui li, is a species of chestnut native to south-central and southeast China. A tree reaching 30m, it is a source of good timber, but has smaller nuts than its size might suggest. Like its close relative Castanea mollissima (Chinese chestnut) it is widely cultivated in China, and quite a few varieties have been developed in recent times.
No narrative description available for this taxon yet.
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Castanea henryi has left across the world's sequence archives.
At a glance
DNA specimens9
Marker genes3
GenBank sequences9
eDNA detections9
Countries1
The DNA barcodea real sequence read deposited for this species
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★matK4★rbcL4★ITS1
plant barcodefungal barcode
07Deep time~3.79 Ma lineage
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
DNA clock origin3.79 Ma TimeTree
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
DNA clock origin
08Occurrence & distribution
Record type2 083 records
Wild obs. + sensor4
Museum / vouchered2 075
Cultivated / captive1
Other3
Range
Area of Occupancy AOO1 728 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy
no georeferenced coordinates · 4 records without
Open the mapobservation + sensor4
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy50% within 1 km
≤100 m 1≤1 km 2≤10 km 1>10 km 2
6 georeferenced · 2 069 without coordinates
Open the institutions mapphysical evidence2 075
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy
no georeferenced coordinates · 1 records without
Open the mapnot free-living1
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions36 of 68 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Kunming, CN
956
Beijing, CN
285
Chengdu, CN
165
Nanjing, CN
113
Guangzhou, CN
85
Guilin, CN
45
Nanjing, CN
34
Yangling, CN
33
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
30
Siouxland Heritage Museumlocation not on record
26
Hangzhou, CN
26
Guangzhou, CN
25
Wuhan, CN
19
Nagasaki University - Fisherieslocation not on record
14
Chinese Academy of Forestrylocation not on record
14
Paris, FR
14
Changsha, CN
14
Seoul, KR
11
Zhuzhou, CN
9
Xiamen, CN
9
Beijing, CN
9
SCAUlocation not on record
8
Shanghai, CN
8
Shanghai, CN
8
Central China Normal Universitylocation not on record
8
San Jose State University, Museum of Birds and Mammalslocation not on record
6
Chongqing Natural History Museumlocation not on record
6
Xian, CN
6
Jiangxi Agricultural Universitylocation not on record
6
Guiyang, CN
5
Fujian Institute of Subtropical Botanylocation not on record
5
Guangxi Agricultural Universitylocation not on record
5
Zhejiang Universitylocation not on record
5
Zhejiang Museum of Natural Historylocation not on record
5
Chengdu, CN
4
Wuhan, CN
3
Xining, CN
3
Museum of the Rockieslocation not on record
3
Jiangxi College of Educationlocation not on record
3
Beijing Normal Universitylocation not on record
3
Nanchong, CN
2
WNNUlocation not on record
2
Awka, NG
2
“Manash Kozybayev North Kazakhstan University" NPLClocation not on record
2
Taipei, TW
2
Philadelphia, US
2
Zhengzhou, CN
2
Guangxi Institute of Traditional Medical and Pharmaceutical Scienceslocation not on record
2
South China Normal Universitylocation not on record
2
Hangzhou Normal Collegelocation not on record
2
Beijing Natural History Museumlocation not on record
1
Jishou Universitylocation not on record
1
Xiangtan City, CN
1
Helsinki, FI
1
Chapel Hill, US
1
Pullman, US
1
Herbarium of South China Botanical Gardenlocation not on record
1
Jiujiang Forestry Institutelocation not on record
1
Tianjin Natural History Museumlocation not on record
1
Guizhou Forestry Schoollocation not on record
1
Minia, EG
1
Anhui Normal Universitylocation not on record
1
Inner Mongolia Universitylocation not on record
1
Peking Universitylocation not on record
1
Central China Agricultural Universitylocation not on record
1
Cambridge, US
1
Shenzhen, CN
1
lbglocation not on record
1
68 institutions · 2 074 of 2 075 vouchered records shown · 1 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA9 detections
Where the DNA of Castanea henryi was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found9
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 9 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median29.2 °C 29.2–29.2
Seasonal swing summer↔winter24.7 °C
Max temp (day)32.0 °C
Min temp (night)26.2 °C
Precipitation264 mm/mo
Air humidity63.0 %
Moisture balance91.8 mm/mo
Vapour deficit1,505 Pa
Wind speed2.90 m/s
Cloud cover40.2 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
WikipediaWikimedia Foundation6 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 083 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI9 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics9 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗