Betula pubescens
Ehrh. · speciesAt a glance
Sources15 archives
Databases and archives Betula pubescens's data was compiled from.
WikipediaWikimedia Foundation14 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility484 774 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI20 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics39 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↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Betula pubescens (syn. Betula alba), commonly known as downy birch and also as moor birch, white birch, European white birch or hairy birch, is a species of deciduous tree, native and abundant throughout northern Europe and northern Asia, growing farther north than any other broadleaf tree. It is closely related to, and often confused with, the silver birch (B. pendula), but grows in wetter places with heavier soils and poorer drainage; smaller trees can also be confused with the dwarf birch (B. nana). Six varieties are recognised and it hybridises with the silver and dwarf birches. A number of cultivars have been developed but many are no longer in cultivation. The larva of the autumnal moth (Epirrita autumnata) feeds on the foliage and in some years, large areas of birch forest can be defoliated by this insect. Many fungi are associated with the tree and certain pathogenic fungi are the causal agents of birch dieback disease. The tree is a pioneer species, readily colonising cleared land, but later being replaced by taller, more long-lived species. The bark can be stripped off without killing the tree and the bark and the timber is used for turnery and in the manufacture of plywood, furniture, shelves, coffins, matches, toys and wood flooring. The inner bark is edible and it was ground up and used in bread-making in times of famine. The rising sap in spring can be used to make refreshing drinks, wines, ales and liqueurs and various parts of the tree have been used in herbal medicine.
No narrative description available for this taxon yet.
Size & morphology12
Life cycle & reproduction14
Diet & foraging2
Habitat & environment10
Physiology & chemistry9
Other traits1
Compounds documented for Betula pubescens across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Documented compounds94 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (1R,2R,4aR,5R,8aR)-4a-methyl-8-methylidene-2-propan-2-yl-1,2,3,4,5,6,7,8a-octahydronaphthalene-1,5-diol | present | NPASS | |
| (1R,3aR,5aR,5bR,7aR,11aR,11bR,13aR,13bS)-1-(2-hydroxypropan-2-yl)-3a,5a,5b,8,8,11a-hexamethyl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysen-9-ol | present | LOTUS | |
| (1R,3aS,5aR,5bR,7aR,8R,9S,11aR,11bR,13aR,13bR)-9-[(E)-3-(3,4-dihydroxyphenyl)prop-2-enoyl]oxy-8-(hydroxymethyl)-5a,5b,8,11a-tetramethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysene-3a-carboxylic acid | present | LOTUS | |
| (1R,4aS,6R,8aR)-8a-methyl-4-methylidene-6-propan-2-yl-2,3,4a,5,7,8-hexahydro-1H-naphthalene-1,6-diol | present | NPASS | |
| (1S,2S,5R,8S)-1,4,4,8-tetramethyl-10-oxatricyclo[6.2.1.02,5]undecan-9-one | present | LOTUS | |
| (1S,4R,5E,9R)-6,10,10-trimethyl-2-methylidenebicyclo[7.2.0]undec-5-en-4-ol | present | LOTUS | |
| (2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(2S)-4-(4-hydroxyphenyl)butan-2-yl]oxyoxane-3,4,5-triol | present | LOTUS | |
| (2R,3S,4S,5R,6R)-2-[[(2R,3R,4R)-3,4-dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxymethyl]-6-[(2R)-4-(4-hydroxyphenyl)butan-2-yl]oxyoxane-3,4,5-triol | present | LOTUS | |
| (2S,4aR,8R,8aR)-8-[(E)-5-hydroxy-3-methylpent-3-enyl]-4,4,7,8a-tetramethyl-1,2,3,4a,5,8-hexahydronaphthalen-2-ol | present | NPASS | |
| (4aR,5R,8aS)-5-hydroxy-4a-methyl-8-methylidene-5,6,7,8a-tetrahydro-1H-naphthalen-2-one | present | NPASS |
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 Betula pubescens has left across the world's sequence archives.
At a glance
★ 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.
The complete instruction manual Betula pubescens 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
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).
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.
2n 5645×GoaT · DTOL Flowering Plants Estimates Kew · GoaT · Kew Plant DNA C-values Database · CCDB · slov-fl +13
2n 583×CCDB · ipcn-api-dl · CCDB · CromoCat 2015
tetraploid1×GoaT · Kew Plant DNA C-values Database
polyploid inferred1×PloiDB · genus-scale
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
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.
Record type484 774 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
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.
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions75 of 153 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Uniwersytet Wrocławskilocation not on record | 9 827 |
| Olocation not on record | 900 |
| Helsinki, FI | 712 |
| Moscow State Universitylocation not on record | 678 |
| LDlocation not on record | 384 |
| Garðabær, IS | 217 |
| TROMlocation not on record | 194 |
| Kuopio, FI | 171 |
| MeiseBGlocation not on record | 166 |
| 163 | |
| Oulu, FI | 130 |
| Bergen, NO | 125 |
| Salzburg, AT | 107 |
| Görlitz, DE | 96 |
| Oskarshamn, SE | 94 |
| Karlsruhe, DE | 79 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 76 |
| Adam Mickiewicz University in Poznańlocation not on record | 75 |
| Trondheim, NO | 67 |
| Turku, FI | 61 |
| Provincia di Livornolocation not on record | 60 |
| SLU Artdatabankenlocation not on record | 60 |
| Tallinn, EE | 55 |
| Jyväskylä, FI | 55 |
| BRNUlocation not on record | 53 |
| GJOlocation not on record | 52 |
| BFLlocation not on record | 51 |
| Lausanne, CH | 49 |
| Tartu, EE | 46 |
| IFR-DNFlocation not on record | 39 |
| Mlocation not on record | 35 |
| Kew, GB | 35 |
| Uniwersytet Warszawskilocation not on record | 35 |
| KMNlocation not on record | 31 |
| Ernst-Moritz-Arndt-Universitat Greifswaldlocation not on record | 30 |
| Porrentruy, CH | 28 |
| Zürich, CH | 28 |
| Zürich, CH | 27 |
| Bern, CH | 27 |
| Irkutsk State Universitylocation not on record | 23 |
| Glarus, CH | 23 |
| South Kensington, GB | 21 |
| Uniwersytet Marii Curie-Skłodowskiejlocation not on record | 20 |
| Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record | 19 |
| Vancouver, CA | 18 |
| Uppsala, SE | 18 |
| Philadelphia, US | 17 |
| Barcelona, ES | 15 |
| Dresden, DE | 15 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 13 |
| Northeastern Forestry Universitylocation not on record | 11 |
| Porvoo, FI | 10 |
| MAlocation not on record | 9 |
| Rotorua, NZ | 9 |
| BDBClocation not on record | 8 |
| Tula State Lev Tolstoy Pedagogical Universitylocation not on record | 8 |
| Instytut Ochrony Przyrody Polskiej Akademii Nauklocation not on record | 7 |
| WTUlocation not on record | 7 |
| DBF-NHMDlocation not on record | 7 |
| H-Wolflocation not on record | 6 |
| TUR-Alocation not on record | 6 |
| SZUlocation not on record | 6 |
| Wlocation not on record | 6 |
| University of Stellenboschlocation not on record | 6 |
| Fulda, DE | 6 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 6 |
| Tilburg, NL | 5 |
| LfUlocation not on record | 5 |
| Sant Julià de Lòria, AD | 5 |
| Tromso University Museumlocation not on record | 5 |
| PRClocation not on record | 5 |
| BClocation not on record | 5 |
| Acadia Universitylocation not on record | 4 |
| Bronx, US | 4 |
| Natural History Museum Rotterdamlocation not on record | 4 |
| GZUlocation not on record | 4 |
| Chongqing Museumlocation not on record | 4 |
| Berlin, DE | 4 |
| nbflocation not on record | 4 |
| Tula State Universitylocation not on record | 4 |
| National Museum Waleslocation not on record | 4 |
| Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowielocation not on record | 4 |
| Vitoria, ES | 4 |
| Naturalis Biodiversity Centerlocation not on record | 3 |
| Finnish Museum of Natural Historylocation not on record | 3 |
| Uniwersytet Śląski w Katowicachlocation not on record | 3 |
| H-AkrKGlocation not on record | 3 |
| Paris, FR | 3 |
| PrivatHerblocation not on record | 3 |
| Frankfurt am Main | 3 |
| Frauenfeld, CH | 3 |
| Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record | 3 |
| Edinburgh, GB | 3 |
| Forssa, FI | 3 |
| Kandalaksha State Nature Reservelocation not on record | 3 |
| CJBGlocation not on record | 2 |
| Universidad del Pais Vasco (UPV/EHU)location not on record | 2 |
| Fribourg, CH | 2 |
| Podgorica, ME | 2 |
| The Tula Region State Institution of Culture "Tula Museum Association"location not on record | 2 |
| BIO-UNIPIlocation not on record | 2 |
| SNSNMClocation not on record | 2 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 2 |
| Christchurch, NZ | 2 |
| Stockholm, SE | 2 |
| John May Museum of Natural Historylocation not on record | 2 |
| Victoria, CA | 2 |
| Chapel Hill, US | 2 |
| St. Paul, US | 2 |
| Bourges, FR | 2 |
| Universidade de Lisboa, Museu Bocagelocation not on record | 2 |
| UoB-IBlocation not on record | 2 |
| Zhengzhou, CN | 2 |
| Corvallis, US | 2 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 2 |
| Alicante, ES | 1 |
| Wellington, NZ | 1 |
| Salamanca, ES | 1 |
| Claremont, US | 1 |
| Rovaniemi, FI | 1 |
| Millersville, US | 1 |
| Columbia, US | 1 |
| Dekalb, US | 1 |
| Herb. BBGlocation not on record | 1 |
| BSBIlocation not on record | 1 |
| Madrid, ES | 1 |
| NMBU:MINAlocation not on record | 1 |
| Beijing, CN | 1 |
| Northridge, US | 1 |
| SWlocation not on record | 1 |
| Siberian Federal Universitylocation not on record | 1 |
| Namur, BE | 1 |
| Ivano-Frankove, UA | 1 |
| University of British Columbia, Herbariumlocation not on record | 1 |
| College of the Atlantic, Museumlocation not on record | 1 |
| Saint Louis, US | 1 |
| Sion, CH | 1 |
| Pullman, US | 1 |
| Philadelphia, US | 1 |
| No collectionlocation not on record | 1 |
| Auckland, NZ | 1 |
| Jaén, ES | 1 |
| Entomological Society of Latvialocation not on record | 1 |
| NoColllocation not on record | 1 |
| Bangkok, TH | 1 |
| València, ES | 1 |
| Royal Botanic Garden Edinburghlocation not on record | 1 |
| Göteborg, SE | 1 |
| Granada, ES | 1 |
| Elikins, US | 1 |
| Canadian Department of Agriculturelocation not on record | 1 |
| Museum of the Rockieslocation not on record | 1 |
| Museo Achille Folettolocation not on record | 1 |
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Where the DNA of Betula pubescens 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
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
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.