Arabis pycnocarpa, the slender rock cress, is a species of flowering plant in the family Brassicaceae. It is native to North America and eastern Asia, being found in rocky, calcareous areas.New England Wildflower Society
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 Arabis pycnocarpa has left across the world's sequence archives.
At a glance
DNA specimens22
Marker genes8
GenBank sequences10
eDNA detections12
Countries3
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★rbcL3★rbcLa★trnL-F★ITS6★ITS1★ITS2trnH-psbA
plant barcodefungal barcodemarker
07Deep time~0.38 Ma lineage
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 origin0.38 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 type453 records
Wild obs. + sensor177
Museum / vouchered276
Origin
Native1
Range
Area of Occupancy AOO1 580 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 accuracy76% within 1 km
≤100 m 75≤1 km 14≤10 km 2>10 km 26
117 georeferenced · 60 without coordinates
Open the mapobservation + sensor177
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 accuracy52% within 1 km
≤100 m 16≤1 km 50≤10 km 51>10 km 11
128 georeferenced · 148 without coordinates
Open the institutions mapphysical evidence276
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 institutions30 of 49 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Chongqing Museumlocation not on record
43
Ann Arbor, US
39
St. Paul, US
38
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
25
Flagstaff, US
18
Musee des Dinosaures d'Esperaza (Aude)location not on record
12
Madison, US
10
Green Bay, US
8
Toronto, CA
8
Pullman, US
6
University of Alberta Museumslocation not on record
5
Corvallis, US
4
Moscow State Universitylocation not on record
3
Dekalb, US
3
Paris, FR
3
Spearfish, US
3
Research Collection of B. A. Bennettlocation not on record
2
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
2
Boise, US
2
Royal Ontario Museum, Green Plant Herbarium (TRT)location not on record
2
Victoria, CA
2
Vancouver, CA
2
San Angelo, US
2
Riverside, US
1
Yellowstone National Park Herbariumlocation not on record
1
Logan, US
1
USFS/BHSClocation not on record
1
Berlin, DE
1
WTUlocation not on record
1
San Luis Obispo, US
1
CASlocation not on record
1
Durham, US
1
Québec, CA
1
Saint Louis, US
1
Université Lavallocation not on record
1
Moscow, US
1
DOI/NPS, Colonial National Historical Parklocation not on record
1
Phoenix, US
1
Anchorage, US
1
WINlocation not on record
1
Tromso University Museumlocation not on record
1
Denver, US
1
Lincoln, US
1
McWane Science Centerlocation not on record
1
Bronx, US
1
Philadelphia, US
1
Wuzhou, CN
1
ASUlocation not on record
1
Rocky Mountain Biological Laboratorylocation not on record
1
49 institutions · 268 of 276 vouchered records shown · 8 without an institution code
09Environmental DNA12 detections
Where the DNA of Arabis pycnocarpa 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 found12
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 12 detections have coordinates
Open the map2 countries0
In silty bank along roadside run-off along m…Dry slope with rock outcropsAlvar; dry meadow.Dry soil slightly uphill from Yellowstone Ri…Rock crevice.
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 median13.6 °C 10.0–16.8
Seasonal swing summer↔winter31.4 °C
Max temp (day)19.2 °C 15.4–20.8
Min temp (night)9.00 °C 4.90–13.6
Precipitation85.8 mm/mo 62.1–115
Air humidity55.2 % 49.3–62.3
Moisture balance-34.1 mm/mo -66.1–-1.30
Vapour deficit676 Pa 536–844
Wind speed2.40 m/s 1.60–4.00
Cloud cover42.6 % 28.0–59.8
CHELSA 1981–2010, ~9 km grid, at location & month of 7 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 Foundation1 languages↗
GBIFGlobal Biodiversity Information Facility453 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI12 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics22 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗