Rhododendron tomentosum
(Stokes) Harmaja · speciesAt a glance
Sources13 archives
Databases and archives Rhododendron tomentosum's data was compiled from.
WikipediaWikimedia Foundation13 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility88 064 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI23 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics30 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↗
giftgenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Rhododendron tomentosum (syn. Ledum palustre), commonly known as marsh Labrador tea, northern Labrador tea or wild rosemary, is a flowering plant in the subsection Ledum of the large genus Rhododendron in the family Ericaceae.
No narrative description available for this taxon yet.
Size & morphology18
Life cycle & reproduction12
Diet & foraging1
Habitat & environment11
Physiology & chemistry8
Other traits2
Compounds documented for Rhododendron tomentosum across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Documented compounds95 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (+)-1(10),4-Cadinadiene | present | LOTUS | |
| (+)-Borneol acetate | present | LOTUS | |
| (+)-Ursolic Acid | present | LOTUS | |
| (-)-trans-Carveol | present | LOTUS | |
| (1aR,4R,4aS,7S,7aS,7bR)-1,1,4,7-tetramethyl-2,3,4a,5,6,7,7a,7b-octahydro-1aH-cyclopropa[e]azulen-4-ol | present | LOTUS | |
| (1aR,7aalpha,7bbeta)-Decahydro-1,1,4alpha,7beta-tetramethyl-4aH-cycloprop[e]azulen-4aalpha-ol | present | LOTUS | |
| (1aR,7S,7aR,7bR)-1,1,4,7-tetramethyl-1a,2,3,5,6,7,7a,7b-octahydrocyclopropa[e]azulene | present | LOTUS | |
| (1aS,4aS,7R,7aR,7bR)-1,1,7-trimethyl-4-methylidene-2,3,4a,5,6,7,7a,7b-octahydro-1aH-cyclopropa[e]azulene | present | NPASS | |
| (1aS,4R,4aR,7bR)-1,1,4,7-tetramethyl-2,3,4,4a,5,7b-hexahydro-1aH-cyclopropa[e]azulen-6-one | present | LOTUS | |
| (1R)-4-methyl-1-prop-1-en-2-ylcyclohex-3-en-1-ol | 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 Rhododendron tomentosum 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 Rhododendron tomentosum 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.
2n 2612×CCDB · ipcn-api-dl · CCDB · book-ipcn66 · CCDB · book-ipcn67-71 +2
2n 5210×CCDB · slov-fl · CCDB · ipcn-api-dl · CCDB · book-ipcn75-78 +2
diploid1×GIFT · GIFT (floras)
polyploid1×GIFT · GIFT (floras)
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 type88 064 records
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 institutions40 of 73 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 | 2 201 |
| Moscow State Universitylocation not on record | 842 |
| Helsinki, FI | 554 |
| LDlocation not on record | 363 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 239 |
| Oskarshamn, SE | 141 |
| Oulu, FI | 134 |
| Turku, FI | 123 |
| SLU Artdatabankenlocation not on record | 74 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 70 |
| Kuopio, FI | 66 |
| TUR-Alocation not on record | 61 |
| Görlitz, DE | 48 |
| University of Stellenboschlocation not on record | 37 |
| WINlocation not on record | 36 |
| Stockholm, SE | 31 |
| WTUlocation not on record | 30 |
| Olocation not on record | 26 |
| IWEP FEB RASlocation not on record | 25 |
| Karlsruhe, DE | 19 |
| St. Paul, US | 19 |
| Montréal, CA | 19 |
| DOI/FWS, Kenai National Wildlife Refugelocation not on record | 18 |
| Porvoo, FI | 18 |
| Herbarium of the Department of Botany, University of Tokyolocation not on record | 17 |
| Rovaniemi, FI | 15 |
| Dresden, DE | 14 |
| Tula State Lev Tolstoy Pedagogical Universitylocation not on record | 12 |
| Wlocation not on record | 9 |
| Québec, CA | 9 |
| Kyoto Universitylocation not on record | 9 |
| Whitehorse, CA | 8 |
| NMBU:MINAlocation not on record | 7 |
| Toronto, CA | 6 |
| Paris, FR | 6 |
| Wuzhou, CN | 5 |
| TROMlocation not on record | 5 |
| Tula State Universitylocation not on record | 5 |
| Forssa, FI | 5 |
| Institute of the biological problems of the North FEB RASlocation not on record | 4 |
| Tsukuba, JP | 4 |
| Chongqing Museumlocation not on record | 3 |
| Provincia di Livornolocation not on record | 3 |
| Edinburgh, GB | 3 |
| NTNU University Museum, Department of Natural Historylocation not on record | 3 |
| Vancouver, CA | 2 |
| Cambridge, US | 2 |
| Emporia, US | 2 |
| Bloomington, US | 2 |
| Philadelphia, US | 2 |
| Research Collection of B. A. Bennettlocation not on record | 2 |
| Saint John, CA | 2 |
| Göteborg, SE | 2 |
| University of Alberta Museumslocation not on record | 2 |
| Millersville, US | 1 |
| PRClocation not on record | 1 |
| GZUlocation not on record | 1 |
| Pullman, US | 1 |
| BRNUlocation not on record | 1 |
| sonstHerblocation not on record | 1 |
| Tromso University Museumlocation not on record | 1 |
| Logan, US | 1 |
| Tampere, FI | 1 |
| Victoria, CA | 1 |
| H-Emmertlocation not on record | 1 |
| Durango, US | 1 |
| Orem, US | 1 |
| Portland, US | 1 |
| Bronx, US | 1 |
| Durham, US | 1 |
| Philadelphia, US | 1 |
| Dekalb, US | 1 |
| GJOlocation 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 Rhododendron tomentosum 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.