Clematis heracleifolia, the tube clematis (大叶铁线莲 da ye tie xian lian), is a species of flowering plant in the buttercup family Ranunculaceae, native to central and northern China. Unlike most other members of the genus Clematis, it has a scrambling rather than a climbing habit. Growing to 1 m tall by up to 50 cm broad, it is a deciduous sub-shrub with broad downy leaves in groups of three, and delicate clusters of elongated tubular blue flowers in late spring and summer. Mature blooms recurve (bend backwards) into a trumpet shape. Repeat flowering sometimes occurs in autumn. The Latin specific epithet heracleifolia means "with leaves resembling hogweed" (Heracleum). The cultivar 'Cassandra', with fragrant flowers, has won the Royal Horticultural Society's Award of Garden Merit.
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 Clematis heracleifolia has left across the world's sequence archives.
At a glance
DNA specimens3
Marker genes2
GenBank sequences10
eDNA detections3
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.
★rbcL10★ITS
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualClematis heracleifolia 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.
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.
CCDB · ipcn-api-dl — LEE, Y. N. 1967. Chromosome numbers of flowering plants in Korea. J. Korean Res. Inst. Ewha Women's Univ. 11: 455–478.
CCDB · ipcn-api-dl — Gong, W. Z., Y. Y. Long & M. X. Li. 1985. Karyotype studies on Clematis from Beijing, China. J. Wuhan Bot. Res. 3(4): 371–379.
CCDB · ipcn-api-dl — Chen, R. y., W. q. Song, X. l. Li, M. x. Li, G. l. Liang & C. b. Chen. 2003. Chromosome Atlas of Major Economic Plants Genome in China, Vol. 3, Chromosome Atlas of Garden Flowering Plants in China. Science Press, Beijing.
CCDB · ipcn-api-dl — BHATTACHARJEE, A. & A. K. Sharma. 1980. Karyological investigations on three genera of Ranunculaceae. Acta Bot. Indica 8: 1–10.
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 origin0.41 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 214 records
Wild obs. + sensor610
Museum / vouchered598
Cultivated / captive4
Other2
Origin
Introduced48
Range
Area of Occupancy AOO2 632 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 accuracy89% within 1 km
≤100 m 48≤1 km 69≤10 km 11>10 km 4
132 georeferenced · 478 without coordinates
Open the mapobservation + sensor610
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 accuracy43% within 1 km
≤1 km 37≤10 km 49>10 km 1
87 georeferenced · 511 without coordinates
Open the institutions mapphysical evidence598
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 3
3 georeferenced · 1 without coordinates
Open the mapnot free-living4
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 institutions34 of 65 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
104
Yangling, CN
77
KR
71
Nanjing, CN
58
Herbarium of the Department of Botany, University of Tokyolocation not on record
21
Kunming, CN
18
Kyoto Universitylocation not on record
17
Xining, CN
17
Zhengzhou, CN
15
Guangzhou, CN
13
Hangzhou, CN
13
Institute of Applied Ecology, Academia Sinicalocation not on record
11
Wuhan, CN
11
Anhui Normal Universitylocation not on record
10
Beijing Normal Universitylocation not on record
10
Tianjin Natural History Museumlocation not on record
9
Guilin, CN
9
Philadelphia, US
8
Shanxi Institute of Biologylocation not on record
7
“Manash Kozybayev North Kazakhstan University" NPLClocation not on record
7
Ischia Marine Centrelocation not on record
6
Seoul, KR
5
Hebei Normal Universitylocation not on record
4
Denver, US
4
Guangzhou, CN
4
Xinxiang, CN
4
Cambridge, US
3
Tsukuba, JP
3
Plocation not on record
3
CASlocation not on record
2
SXTCMlocation not on record
2
Elocation not on record
2
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
2
Korea National Arboretumlocation not on record
2
Inner Mongolia Universitylocation not on record
2
Capital Normal Universitylocation not on record
2
Hangzhou Normal Collegelocation not on record
2
重庆市药物种植研究所药用植物标本馆location not on record
2
Siouxland Heritage Museumlocation not on record
2
South Kensington, GB
2
Shanxi Universitylocation not on record
1
Auckland, NZ
1
Shanghai, CN
1
SDFlocation not on record
1
Zhejiang Universitylocation not on record
1
KIWElocation not on record
1
Saint Louis, US
1
Beijing Natural History Museumlocation not on record
1
Vancouver, CA
1
Xian, CN
1
Kew, GB
1
Shanghai, CN
1
National Institute of Biological Resourceslocation not on record
1
Chengdu, CN
1
Berlin, DE
1
Taipei, TW
1
Columbia, US
1
EMTCMlocation not on record
1
Awka, NG
1
Chinese Academy of Forestrylocation not on record
1
Chongqing Museumlocation not on record
1
College Park, US
1
Central China Normal Universitylocation not on record
1
Podgorica, ME
1
Christchurch, NZ
1
65 institutions · 589 of 598 vouchered records shown · 9 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 DNA3 detections
Where the DNA of Clematis heracleifolia 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 found3
Studies independent surveys1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 3 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 Foundation5 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 214 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI3 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics3 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype