Corylopsis sinensis, the Chinese winter hazel (simplified Chinese: 蜡瓣花; traditional Chinese: 蠟瓣花; pinyin: là bàn huā), is a species of flowering plant in the witch-hazel family Hamamelidaceae, native to western China. Growing to 4 m tall and broad, it is a substantial deciduous shrub. With ovate leaves, it produces delicately fragrant, drooping racemes of pale yellow flowers with orange anthers in spring. The Latin specific epithet sinensis means "Chinese" or "of China". There are four varieties and one form recorded:- Corylopsis sinensis var. calvescens Corylopsis sinensis var. glandulifera Corylopsis sinensis var. parvifolia Corylopsis sinensis var. sinensis Corylopsis sinensis fo. veitchiana This plant is cultivated as an ornamental. Though hardy down to -15 C, it prefers a sheltered spot in acidic soil. Both C. sinensis var. calvescens f. veitchiana and C. sinensis var. sinensis are recipients of the Royal Horticultural Society's Award of Garden Merit.
No narrative description available for this taxon yet.
Compounds documented for Corylopsis sinensis across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile1 class
Isocoumarins1
Documented compounds1 total
Compound
Class
Amount
Source
11-O-Galloylbergenin
present
LOTUS
05DNA & barcoding11 specimens
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 Corylopsis sinensis has left across the world's sequence archives.
At a glance
DNA specimens11
Marker genes4
GenBank sequences7
eDNA detections7
Countries2
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.
★matK★rbcL5★ITS2★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualCorylopsis sinensis carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Genome size2 259 180 000 bp
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
THIS GENOME Corylopsis sinensis2.26 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosomes2n = 24 n = 12
Ploidydiploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 241×CCDB · book-fedorov
CCDB · book-fedorov — Santamour 1965a
n 121×CCDB · book-ipcn65
CCDB · book-ipcn65 — Santamour 1965a
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy83% within 1 km
≤100 m 2≤1 km 3≤10 km 1
6 georeferenced · 1 without coordinates
Open the mapobservation + sensor7
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 accuracy75% within 1 km
≤100 m 1≤1 km 11≤10 km 3>10 km 1
16 georeferenced · 829 without coordinates
Open the institutions mapphysical evidence845
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy100% within 1 km
≤1 km 8
8 georeferenced · 4 without coordinates
Open the mapnot free-living12
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 institutions39 of 69 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Beijing, CN
186
Central China Normal Universitylocation not on record
84
Wuhan, CN
59
Chengdu, CN
49
Guangzhou, CN
45
Nanjing, CN
44
Changsha, CN
29
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
26
Guilin, CN
25
Kunming, CN
20
Awka, NG
18
Siouxland Heritage Museumlocation not on record
17
Shanghai, CN
16
Beijing, CN
16
Hangzhou, CN
14
Chengdu, CN
12
Wuhan, CN
10
Anhui Normal Universitylocation not on record
10
Central China Agricultural Universitylocation not on record
10
Guiyang, CN
9
Guangzhou, CN
8
South Kensington, GB
7
Zhejiang Universitylocation not on record
7
Philadelphia, US
6
Shanghai, CN
6
University of Stellenboschlocation not on record
6
Zhuzhou, CN
5
Seoul, KR
5
Guangxi Agricultural Universitylocation not on record
5
South China Normal Universitylocation not on record
5
Chinese Academy of Forestrylocation not on record
4
Nagasaki University - Fisherieslocation not on record
4
Saint Louis, US
4
Taipei, TW
4
Nanjing, CN
4
Guiyang, CN
3
Herbarium of South China Botanical Gardenlocation not on record
3
Southwest Forestry Collegelocation not on record
3
Jiangxi College of Traditional Chinese Medicinelocation not on record
3
WNNUlocation not on record
3
Bronx, US
3
Xiamen, CN
3
Fujian Institute of Subtropical Botanylocation not on record
3
Chongqing Museumlocation not on record
2
MeiseBGlocation not on record
2
nlocation not on record
2
Bangkok, TH
2
New Haven, US
1
Chengdu, CN
1
San Jose State University, Museum of Birds and Mammalslocation not on record
1
Hangzhou Normal Collegelocation not on record
1
Logan, US
1
EMTCMlocation not on record
1
Guizhou Forestry Schoollocation not on record
1
Minia, EG
1
Jiangxi College of Educationlocation not on record
1
FJFClocation not on record
1
Vitoria, ES
1
Jishou Universitylocation not on record
1
CASlocation not on record
1
Flagstaff, US
1
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
1
Podgorica, ME
1
Uppsala, SE
1
La Paz, BO
1
FLASlocation not on record
1
Muséum Henri Lecoqlocation not on record
1
Vancouver, CA
1
Zhengzhou, CN
1
69 institutions · 833 of 845 vouchered records shown · 8 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 DNA7 detections
Where the DNA of Corylopsis sinensis 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 found7
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 7 detections have coordinates
Open the map2 countries0
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 median21.0 °C 7.40–26.9
Seasonal swing summer↔winter25.4 °C
Max temp (day)25.2 °C 9.60–29.7
Min temp (night)16.4 °C 3.00–23.3
Precipitation264 mm/mo 152–344
Air humidity64.7 % 61.1–64.9
Moisture balance91.8 mm/mo 11.7–263
Vapour deficit1000 Pa 428–1,311
Wind speed2.90 m/s 2.60–3.10
Cloud cover44.6 % 37.2–47.6
CHELSA 1981–2010, ~9 km grid, at location & month of 5 detection points · 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 Facility864 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics11 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype