Hudsonia tomentosa is a species of flowering plant in the rockrose family known by the common names woolly beachheather, beach heather, and sand heather. It is native to northeastern North America, including central and eastern Canada and the northeastern United States.
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 Hudsonia tomentosa has left across the world's sequence archives.
At a glance
DNA specimens12
Marker genes5
GenBank sequences9
eDNA detections5
Countries2
The DNA barcodea real sequence read deposited for this species
★ 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★rbcL4★rbcLa★ITS4★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualHudsonia tomentosa 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.
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
DNA clock origin1.89 Ma TimeTree
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.
DNA clock origin
08Occurrence & distribution
Record type3 957 records
Wild obs. + sensor3 109
Museum / vouchered848
Range
Area of Occupancy AOO5 584 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 accuracy82% within 1 km
≤100 m 1 903≤1 km 243≤10 km 171>10 km 315
2 632 georeferenced · 477 without coordinates
Open the mapobservation + sensor3 109
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 accuracy18% within 1 km
≤100 m 16≤1 km 78≤10 km 326>10 km 117
537 georeferenced · 311 without coordinates
Open the institutions mapphysical evidence848
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 institutions48 of 66 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Université Lavallocation not on record
87
University of New Hampshirelocation not on record
78
Burlington, US
77
Philadelphia, US
72
Ann Arbor, US
67
Québec, CA
44
Montréal, CA
39
Chongqing Museumlocation not on record
39
WINlocation not on record
25
University of Alberta Museumslocation not on record
23
Saint John, CA
21
Staten Island, US
17
New Haven, US
16
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
16
Madison, US
14
Bloomington, US
13
College Park, US
11
Williamsburg, US
11
University of Stellenboschlocation not on record
11
Bangkok, TH
7
Acadia Universitylocation not on record
7
Bronx, US
7
Paris, FR
6
Durham, US
5
Green Bay, US
5
Kingston, US
5
McWane Science Centerlocation not on record
4
Washington, US
4
Norfolk, US
4
Dekalb, US
3
Denver, US
3
Millersville, US
3
Canadian Museum of Nature, National Herbarium of Canadalocation not on record
3
Chapel Hill, US
2
Brookings, US
2
Vancouver, CA
2
Chicago, US
2
Wuzhou, CN
2
Moscow State Universitylocation not on record
2
Philadelphia, US
2
China Agricultural Universitylocation not on record
1
Wellington, NZ
1
Santa Barbara, US
1
Toronto, CA
1
Dover, US
1
Davenport, US
1
AUAlocation not on record
1
BClocation not on record
1
Saint Louis, US
1
Miami, US
1
Long Beach, US
1
Chicago, US
1
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
1
Research Collection of B. A. Bennettlocation not on record
1
US
1
Claremont, US
1
Keene State Universitylocation not on record
1
Whitehorse, CA
1
Flagstaff, US
1
Fargo, US
1
Pittsburg, US
1
Hudson, US
1
Riverside, US
1
Maryland Department of Natural Resourceslocation not on record
1
Kew, GB
1
San Diego, US
1
66 institutions · 787 of 848 vouchered records shown · 58 without an institution code
09Environmental DNA5 detections
Where the DNA of Hudsonia tomentosa 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 found5
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 5 detections have coordinates
Open the map2 countries0
Open sandy field
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 12.4–17.4
Seasonal swing summer↔winter24.7 °C
Max temp (day)19.7 °C 15.4–21.9
Min temp (night)11.9 °C 9.10–13.6
Precipitation89.4 mm/mo 81.0–110
Air humidity59.6 % 57.5–61.5
Moisture balance-33.5 mm/mo -53.5–-1.30
Vapour deficit724 Pa 599–824
Wind speed3.60 m/s 2.20–5.40
Cloud cover42.5 % 38.1–49.0
CHELSA 1981–2010, ~9 km grid, at location & month of 4 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 Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 957 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI5 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics12 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗