Tsuga chinensis, commonly referred to as the Taiwan or Chinese hemlock, or in Chinese as tieshan (), is a coniferous tree species native to China, Taiwan, Tibet and Vietnam. The tree is quite variable and has many recognised varieties, though some are also maintained to be separate species by certain authorities. The tree was recently discovered in the mountains of northern Vietnam, making that the southernmost extension of its range.
No narrative description available for this taxon yet.
Compounds documented for Tsuga chinensis across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
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 Tsuga chinensis has left across the world's sequence archives.
At a glance
DNA specimens29
Marker genes5
GenBank sequences9
eDNA detections26
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.
★COI-5P★matK2★rbcL5★ITS2★ITS2
animal barcodeplant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualTsuga chinensis 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 size20 391 300 000 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
HUMAN3.2 Gb
WHEAT17 Gb
THIS GENOME Tsuga chinensis20.39 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.
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 origin2.22 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 type1 792 records
Wild obs. + sensor119
Museum / vouchered1 644
Cultivated / captive12
Other17
Origin
Native4
Range
Area of Occupancy AOO1 100 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 accuracy92% within 1 km
≤100 m 72≤1 km 15≤10 km 5>10 km 3
95 georeferenced · 24 without coordinates
Open the mapobservation + sensor119
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 5≤10 km 1>10 km 1
8 georeferenced · 1 636 without coordinates
Open the institutions mapphysical evidence1 644
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 7
7 georeferenced · 5 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 68 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Chengdu, CN
432
Beijing, CN
331
Nanjing, CN
130
Guangzhou, CN
117
Seoul, KR
77
Chengdu, CN
70
Wuhan, CN
69
Yangling, CN
45
Nanjing, CN
41
Kunming, CN
28
Siouxland Heritage Museumlocation not on record
25
Guilin, CN
20
Nanjing, CN
20
Guiyang, CN
16
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
14
Chongqing, CN
13
Zhuzhou, CN
13
Philadelphia, US
11
Chinese Academy of Forestrylocation not on record
11
Guiyang, CN
9
Central China Normal Universitylocation not on record
9
South China Normal Universitylocation not on record
9
Museum of the Rockieslocation not on record
7
Chongqing Natural History Museumlocation not on record
7
Jiangxi Agricultural Universitylocation not on record
7
Wuhan, CN
6
Xinxiang, CN
6
Hangzhou, CN
6
Nanyue Arboretumlocation not on record
6
Guangzhou, CN
6
Peking Universitylocation not on record
5
MeiseBGlocation not on record
5
Xian, CN
5
Taipei, TW
4
Shanghai, CN
4
GZFlocation not on record
4
Xining, CN
3
Christchurch, NZ
3
Beijing Natural History Museumlocation not on record
3
Central China Agricultural Universitylocation not on record
3
Taipei, TW
2
Rotorua, NZ
2
Nagasaki University - Fisherieslocation not on record
2
Yunnan Universitylocation not on record
2
Saint Louis, US
2
Edinburgh, GB
2
University of Stellenboschlocation not on record
2
Tianjin Natural History Museumlocation not on record
1
nlocation not on record
1
Corvallis, US
1
Fort Worth, US
1
Guizhou Forestry Schoollocation not on record
1
Fujian Institute of Subtropical Botanylocation not on record
1
Guiyang, CN
1
Beijing, CN
1
Auckland, NZ
1
South Kensington, GB
1
Sichuan Grassland Research Institutelocation not on record
1
SLU Artdatabankenlocation not on record
1
“Manash Kozybayev North Kazakhstan University" NPLClocation not on record
1
Vancouver, CA
1
J. Rusek Collectionlocation not on record
1
Stockholm, SE
1
JMSlocation not on record
1
Port Elizabeth Museum (Bayworld)location not on record
1
云南省珍稀濒危植物引种繁育中心location not on record
1
Zhejiang Universitylocation not on record
1
Philadelphia, US
1
68 institutions · 1 635 of 1 644 vouchered records shown · 6 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 DNA26 detections
Where the DNA of Tsuga chinensis 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 found26
Studies independent surveys1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 26 detections have coordinates
Open the map0 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.
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 Foundation7 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 792 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI26 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics29 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗