Epigaea repens
speciesAt a glance
Sources12 archives
Databases and archives Epigaea repens's data was compiled from.
WikipediaWikimedia Foundation4 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility21 205 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI9 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics15 specimens↗
LOTUSNatural Products (Wikidata)compounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
Paleobiology DatabasePBDB consortiumfossil record↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Epigaea repens, the mayflower, trailing arbutus, or ground laurel, is a low, spreading shrub in the family Ericaceae. It is found from Newfoundland to Florida, west to Kentucky and the Northwest Territories.
No narrative description available for this taxon yet.
Size & morphology5
Life cycle & reproduction4
Diet & foraging1
Habitat & environment7
Physiology & chemistry5
Compounds documented for Epigaea repens across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Documented compounds7 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (3S,4aR,6aR,6aR,6bR,8aR,12S,12aS,14aR,14bR)-4,4,6a,6b,8a,12,14b-heptamethyl-11-methylidene-1,2,3,4a,5,6,6a,7,8,9,10,12,12a,13,14,14a-hexadecahydropicen-3-ol | present | LOTUS | |
| Alpha-Amyrin | present | LOTUS | |
| beta-Amyrin | present | LOTUS | |
| beta-Sitosterol | present | LOTUS | |
| Lupeol | present | LOTUS | |
| Stigmasterol | present | LOTUS | |
| Taraxasterol | present | LOTUS |
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 Epigaea repens 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 Epigaea repens 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 242×CCDB · ipcn-api-dl · CCDB · eflora
polyploid inferred1×PloiDB · family-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 type21 205 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 institutions76 of 113 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Philadelphia, US | 391 |
| Chongqing Museumlocation not on record | 286 |
| Madison, US | 204 |
| University of New Hampshirelocation not on record | 108 |
| Québec, CA | 80 |
| Ann Arbor, US | 75 |
| College Park, US | 72 |
| Université Lavallocation not on record | 62 |
| Burlington, US | 51 |
| Bangkok, TH | 50 |
| Williamsburg, US | 42 |
| Chapel Hill, US | 42 |
| Acadia Universitylocation not on record | 42 |
| Saint John, CA | 39 |
| New Haven, US | 38 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 37 |
| Allentown, US | 36 |
| Montréal, CA | 36 |
| Bloomington, US | 35 |
| University of Stellenboschlocation not on record | 33 |
| Toronto, CA | 29 |
| Bronx, US | 28 |
| Appalachian State Universitylocation not on record | 24 |
| Philadelphia, US | 23 |
| Tuscaloosa, US | 21 |
| Jena Microbial Resource Collectionlocation not on record | 18 |
| Green Bay, US | 18 |
| Millersville, US | 17 |
| Keene State Universitylocation not on record | 16 |
| Norfolk, US | 13 |
| New Brunswick, US | 10 |
| Knoxville, US | 10 |
| Jackson, US | 9 |
| Columbia, US | 9 |
| Morgantown, US | 8 |
| Paris, FR | 6 |
| Dover, US | 6 |
| Staten Island, US | 6 |
| Davenport, US | 6 |
| Lord Fairfax Community Collegelocation not on record | 6 |
| GAlocation not on record | 6 |
| University of Southern Mississippilocation not on record | 5 |
| Johnson City, US | 5 |
| University of Wisconsinlocation not on record | 5 |
| Tennessee Technological Universitylocation not on record | 5 |
| Vancouver, CA | 5 |
| San Jose State University, Museum of Birds and Mammalslocation not on record | 5 |
| Saint Louis, US | 5 |
| McWane Science Centerlocation not on record | 4 |
| Moscow State Universitylocation not on record | 4 |
| Kingston, US | 4 |
| Richmond, US | 4 |
| Beijing, CN | 4 |
| James F. Matthews Center for Biodiversity Studieslocation not on record | 4 |
| Fairfax, US | 4 |
| Clemson, US | 4 |
| Austin, US | 4 |
| Mohonk Preservelocation not on record | 4 |
| Durham, US | 3 |
| Weymouth Woods Sandhills Nature Preservelocation not on record | 3 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 3 |
| Emporia, US | 3 |
| Mississippi State, US | 3 |
| Western Carolina Universitylocation not on record | 3 |
| Washington, US | 3 |
| Miami, US | 3 |
| Durham, US | 3 |
| Chicago, US | 3 |
| University of North Carolina at Pembrokelocation not on record | 3 |
| Ypsilanti, US | 3 |
| Asheville, US | 3 |
| Denver, US | 3 |
| Whitewater, US | 2 |
| Dekalb, US | 2 |
| Wuzhou, CN | 2 |
| Tall Timbers Research Stationlocation not on record | 2 |
| University of Guelph, OAC Herbariumlocation not on record | 2 |
| Claremont, US | 2 |
| Santa Barbara, US | 2 |
| Fullerton, US | 2 |
| Mount Berry, US | 2 |
| Flagstaff, US | 2 |
| WINlocation not on record | 2 |
| Institut und Museum fuer Geologie und Palaeontologielocation not on record | 2 |
| Pittsburg, US | 1 |
| Cambridge, US | 1 |
| LDlocation not on record | 1 |
| Whitehorse, CA | 1 |
| Macomb, US | 1 |
| Mount Pleasant, US | 1 |
| Severin-McDaniel Insect Collectionlocation not on record | 1 |
| Fargo, US | 1 |
| US | 1 |
| Harrisonburg, US | 1 |
| San Angelo, US | 1 |
| Long Beach, US | 1 |
| Oswego, US | 1 |
| Montréal, CA | 1 |
| Berlin, DE | 1 |
| Istituto Agrario Castelnuovolocation not on record | 1 |
| Royal Botanical Gardenslocation not on record | 1 |
| Oskarshamn, SE | 1 |
| Brookings, US | 1 |
| Davis, US | 1 |
| LPMMBHlocation not on record | 1 |
| BAYLUlocation not on record | 1 |
| Northridge, US | 1 |
| EL PASO, US | 1 |
| Kunming, CN | 1 |
| Valdosta State Universitylocation not on record | 1 |
| University of Tennessee at Chattanoogalocation not on record | 1 |
| PHlocation not on record | 1 |
| Black Rock Forest Consortiumlocation 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 Epigaea repens 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.