De Hollandse iep is een nothospecies: een hybride tussen de ruwe iep en de gladde iep. De boom kan 35 m hoog worden. De bladeren zijn veernervig en gezaagd, de beide helften zijn ongelijk. Iepen kan men herkennen aan het bezit van een scheve bladvoet. Op de plaats waar het blad aan de twijg vastzit loopt de ene helft van het blad verder door dan de andere. Volwassen iepen hebben een gegroefde voedselrijke schors. Iepeschors werd vroeger veel gebruikt als veevoer. De Hollandse iep is gevoelig voor de iepziekte. De schimmel wordt verspreid door de grote en de kleine iepenspintkever. De volwassen kevers voeren een rijpingsvraat uit aan de okselknoppen van gezonde bomen. Ze brengen zo een infectie tot stand. In zieke, reeds aangetaste bomen, zogenaamde broedbomen, leggen ze hun eieren in een gang onder de bast.
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 hollandica has left across the world's sequence archives.
At a glance
Marker genes2
GenBank sequences2
eDNA detections2
Countries1
The DNA barcodea real sequence read deposited for this species
Ulmus x hollandica partial rbcL gene for RuBisCo, specimen voucher MIB:ZPL:03197
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.
★matK1★rbcL1
plant barcode
06Genome at a glanceCCDB
The complete instruction manualUlmus hollandica 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.
Chromosomes2n = 28 n = 14
Ploidydiploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 281×CCDB · book-fedorov
CCDB · book-fedorov — Leliveld 1933
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 accuracy65% within 1 km
≤100 m 709≤1 km 179≤10 km 468>10 km 5
1 361 georeferenced · 687 without coordinates
Open the mapobservation + sensor2 048
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 accuracy85% within 1 km
≤100 m 188≤1 km 141≤10 km 50>10 km 10
389 georeferenced · 249 without coordinates
Open the institutions mapphysical evidence638
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 118
118 georeferenced · 555 without coordinates
Open the mapnot free-living673
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 institutions28 of 50 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
DBF-NHMDlocation not on record
104
MeiseBGlocation not on record
80
LDlocation not on record
63
SLU Artdatabankenlocation not on record
40
Museo Entomologico de Leonlocation not on record
34
Rotorua, NZ
32
Adelaide, AU
23
Christchurch, NZ
20
Washington, US
18
Auckland, NZ
17
Mount Annan, AU
12
South Kensington, GB
11
Hobart, AU
10
Görlitz, DE
9
Moscow State Universitylocation not on record
7
Museum of the Rockieslocation not on record
6
Oskarshamn, SE
5
Canberra, AU
5
València, ES
4
Olocation not on record
4
Saint Louis, US
3
Dekalb, US
3
Bronx, US
3
BFLlocation not on record
3
Chongqing Museumlocation not on record
2
University of Stellenboschlocation not on record
2
Helsinki, FI
2
Uppsala, SE
2
PRClocation not on record
2
College of the Atlantic, Museumlocation not on record
2
Universidad del Pais Vasco (UPV/EHU)location not on record
2
Brussel, BE
2
Canadian Department of Agriculturelocation not on record
2
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
1
Natural History Museum Rotterdamlocation not on record
1
Dover, US
1
Corvallis, US
1
JBSlocation not on record
1
MAlocation not on record
1
Orem, US
1
Entomological Society of Latvialocation not on record
1
Frankfurt am Main
1
Toronto, CA
1
Barcelona, ES
1
Namur, BE
1
Logan, US
1
Santa Barbara, US
1
GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record
1
KMNlocation not on record
1
New Brunswick, US
1
50 institutions · 551 of 638 vouchered records shown · 80 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 DNA2 detections
Where the DNA of Ulmus hollandica 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 found2
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 2 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 median14.5 °C 14.5–14.5
Seasonal swing summer↔winter19.6 °C
Max temp (day)18.9 °C
Min temp (night)9.30 °C
Precipitation72.2 mm/mo
Air humidity58.3 %
Moisture balance-20.6 mm/mo
Vapour deficit782 Pa
Wind speed2.60 m/s
Cloud cover40.9 %
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.
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 359 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI2 eDNA detections↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype