DISPLAYTITLE Ulmus × hollandica var. insularum was recognized as a biometrically distinct population of U. × hollandica endemic to all the Channel Islands and the Cotentin peninsula of France by Richens and Jeffers in 1975. The tree had been treated within U. montana (:glabra) until McClintock correctly assigned it to U. × hollandica.McClintock, D. (1975). The wild flowers of Guernsey, p.149. London.
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 Ulmus has left across the world's sequence archives.
At a glance
DNA specimens1
Marker genes1
eDNA detections7
Countries2
Marker genes sequenced
★ 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.
★rbcLa
plant barcode
08Occurrence & distribution
Record type100 375 records
Wild obs. + sensor82 399
Museum / vouchered1 919
Cultivated / captive15 436
Fossil619
Other2
Origin
Native9 193
Introduced989
Range
Area of Occupancy AOO96 504 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 accuracy46% within 1 km
≤100 m 26 377≤1 km 7 118≤10 km 39 100>10 km 45
72 640 georeferenced · 9 759 without coordinates
Open the mapobservation + sensor82 399
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 accuracy39% within 1 km
≤100 m 54≤1 km 319≤10 km 545>10 km 31
949 georeferenced · 970 without coordinates
Open the institutions mapphysical evidence1 919
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
≤100 m 8
8 georeferenced · 15 428 without coordinates
Open the mapnot free-living15 436
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 institutions90 of 159 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
MeiseBGlocation not on record
234
Uniwersytet Wrocławskilocation not on record
219
Görlitz, DE
95
Mlocation not on record
93
Museo Entomologico de Leonlocation not on record
78
Karlsruhe, DE
73
Beijing, CN
54
Berlin, DE
28
Canadian Department of Agriculturelocation not on record
25
University of Arizona, Laboratory of Tree-Ring Researchlocation not on record
23
Guangzhou, CN
23
Bronx, US
22
Vitoria, ES
19
Cambridge University Herbariumlocation not on record
18
LDlocation not on record
16
Moscow State Universitylocation not on record
15
Obihiro Centennial City Museumlocation not on record
14
Yunnan Universitylocation not on record
13
PRClocation not on record
13
Auckland, NZ
13
Chinese Academy of Forestrylocation not on record
12
Xian, CN
12
Universidade de Lisboa, Museu Bocagelocation not on record
11
University of Stellenboschlocation not on record
10
Shanghai, CN
9
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
9
Saint Louis, US
9
Northeastern Forestry Universitylocation not on record
9
Allentown, US
8
M-Lichenslocation not on record
8
SLU Artdatabankenlocation not on record
8
Nagasaki University - Fisherieslocation not on record
8
ifplocation not on record
8
Kew, GB
7
Tartu, EE
7
Uppsala, SE
7
Columbia, US
7
Tianjin Natural History Museumlocation not on record
7
Córdoba, AR
6
Peking Universitylocation not on record
6
Mexico City, MX
6
South Kensington, GB
6
Tempe, US
6
Canberra, AU
6
Mount Annan, AU
6
ENTClocation not on record
6
Chapel Hill, US
6
INTAlocation not on record
5
BClocation not on record
5
València, ES
5
Madison, US
5
Xining, CN
5
Institute of Applied Ecology, Academia Sinicalocation not on record
4
Northeast Institute of Geography and Agroecology, Chinese Academy of Scienceslocation not on record
4
Staten Island, US
4
Lanzhou, CN
4
Changsha, CN
4
Riverside, US
4
Institut und Museum fuer Geologie und Palaeontologielocation not on record
4
Christchurch, NZ
4
St. Paul, US
4
Wuhan, CN
4
Washington, US
4
Jyväskylä, FI
4
Wlocation not on record
4
BSBIlocation not on record
3
Mount Pleasant, US
3
Museum of the Rockieslocation not on record
3
Guiyang, CN
3
Barcelona, ES
3
San Luis Obispo, US
3
Northridge, US
3
Durango, MX
3
DOI/NPS, Greenbelt Parklocation not on record
2
MAlocation not on record
2
KMNlocation not on record
2
CASlocation not on record
2
Philadelphia, US
2
Santa Cruz, US
2
Santa Barbara, US
2
Irkutsk State Universitylocation not on record
2
BAYLUlocation not on record
2
Claremont, US
2
Davis, US
2
College Park, US
2
Adelaide, AU
2
Guangzhou, CN
2
Phyletisches Museum Jenalocation not on record
2
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
2
University of Guelph, OAC Herbariumlocation not on record
2
Beijing Natural History Museumlocation not on record
2
Shanghai, CN
2
Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record
2
GJOlocation not on record
2
BRNUlocation not on record
2
ZRC-SAZUlocation not on record
2
Beijing Normal Universitylocation not on record
2
Kiritappu Wetland National Trustlocation not on record
2
Mexico City, MX
2
Denver, US
2
Chongqing Museumlocation not on record
2
CICYTEXlocation not on record
2
Smithfield, AU
1
McWane Science Centerlocation not on record
1
Sevilla, ES
1
Dover, US
1
Weber State Universitylocation not on record
1
Seoul, KR
1
Dekalb, US
1
Fort Worth, US
1
Zhejiang Universitylocation not on record
1
Forest Survey and Design Institute, Forestry Administrative Bureau of Daxinganlinglocation not on record
1
WNNUlocation not on record
1
Sevilla, ES
1
Guasave, MX
1
Mexico City, MX
1
Podgorica, ME
1
Davenport, US
1
Minia, EG
1
Walla Walla, US
1
Nijmegen, NL
1
Universidad del Pais Vasco (UPV/EHU)location not on record
1
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
1
Olocation not on record
1
ASUlocation not on record
1
Burlington, US
1
Nanjing, CN
1
John May Museum of Natural Historylocation not on record
1
Valparaiso, CL
1
University of Southern Mississippilocation not on record
1
Edinburgh, GB
1
Taipei, TW
1
Provincia di Livornolocation not on record
1
Pretoria, ZA
1
WTUlocation not on record
1
Awka, NG
1
USFSlocation not on record
1
US
1
Irvine, US
1
Pullman, US
1
Entomological Society of Latvialocation not on record
1
Fayetteville, US
1
Paris, FR
1
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
1
Tuscaloosa, US
1
Wuzhou, CN
1
Tacoma, US
1
EL PASO, US
1
Siouxland Heritage Museumlocation not on record
1
Albuquerque, US
1
Alabama Museum of Natural Historylocation not on record
1
New Haven, US
1
Philadelphia, US
1
San Angelo, US
1
Jackson, US
1
UFMSlocation not on record
1
Russellville, US
1
Nanjing, CN
1
Denton, US
1
159 institutions · 1 514 of 1 919 vouchered records shown · 364 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 Ulmus 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 surveys2
Countries2
Signal confidence: moderateweighed 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 median14.4 °C 2.00–17.5
Seasonal swing summer↔winter15.3 °C
Max temp (day)16.9 °C 3.60–21.6
Min temp (night)11.7 °C 0.6–13.9
Precipitation61.7 mm/mo 52.8–73.7
Air humidity60.5 % 59.7–68.6
Vapour deficit648 Pa 228–818
Cloud cover45.1 % 42.5–53.3
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 Foundation17 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility100 375 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics1 specimens↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗