Pellaea breweri is a species of fern known by the common name Brewer's cliffbrake. It is native to much of the Western United States. It grows in rocky habitat such as cliffs and mountain slopes.
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 Pellaea breweri has left across the world's sequence archives.
At a glance
DNA specimens2
Marker genes2
GenBank sequences2
eDNA detections2
Countries1
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.
★rbcL1★ITS1
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualPellaea breweri 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.
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 583×CCDB · book-LoveLove1977 · CCDB · eflora
CCDB · book-LoveLove1977 — Britton (in Tryon, A. F. 1957)
CCDB · book-LoveLove1977 — Tryon, A. F. & Britton 1958
CCDB · eflora
n 292×CCDB · ipcn-api-dl · CCDB · Cave1958
CCDB · ipcn-api-dl — Windham, M. D. & G. Yatskievych. 2003. Chromosome studies of cheilanthoid ferns (Pteridaceae: Cheilanthoideae) from the western United States and Mexico. Amer. J. Bot. 90(12): 1788–1800.
CCDB · Cave1958 — Tryon & Britton 1958
07Deep time~40.7 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 origin40.7 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 type1 262 records
Wild obs. + sensor551
Museum / vouchered711
Origin
Native43
Range
Area of Occupancy AOO2 720 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 accuracy95% within 1 km
≤100 m 334≤1 km 40≤10 km 9>10 km 9
392 georeferenced · 159 without coordinates
Open the mapobservation + sensor551
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 accuracy54% within 1 km
≤100 m 28≤1 km 227≤10 km 202>10 km 13
470 georeferenced · 241 without coordinates
Open the institutions mapphysical evidence711
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 institutions51 of 71 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
WTUlocation not on record
69
Moscow, US
56
Claremont, US
52
Bronx, US
45
Pullman, US
36
US
31
CASlocation not on record
31
Philadelphia, US
26
Logan, US
21
Corvallis, US
19
Chicago, US
19
Fredericton Stock Culture Collectionlocation not on record
18
Davis, US
17
Missoula, US
15
Riverside, US
13
Boise, US
12
Arcata, US
11
Santa Barbara, US
11
Caldwell, US
10
San Diego, US
10
DOI/NPS, Colonial National Historical Parklocation not on record
8
Pittsburg, US
7
Musee des Dinosaures d'Esperaza (Aude)location not on record
7
Orem, US
6
Henderson, US
6
Durham, US
5
St. Paul, US
5
US
5
Austin, US
5
Knoxville, US
5
LDlocation not on record
4
Bloomington, US
4
Flagstaff, US
4
Angwin, US
4
Northridge, US
4
New Haven, US
3
Los Angeles, US
3
McWane Science Centerlocation not on record
3
San Francisco, US
3
Victoria, CA
3
San Luis Obispo, US
3
Provo, US
3
Canadian Department of Agriculturelocation not on record
3
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
3
Wellington, NZ
2
Vancouver, CA
2
Pocatello, US
2
ASUlocation not on record
2
Portland, US
2
Chongqing Museumlocation not on record
2
Madison, US
2
INFlocation not on record
2
Durham, US
1
Eastern Nevada Landscape Coalitionlocation not on record
1
San Jose, US
1
Museo Nacional de Costa Rica (MNCR)location not on record
1
AUAlocation not on record
1
Chapel Hill, US
1
Weber State Universitylocation not on record
1
Millersville, US
1
Denver, US
1
Bozeman, US
1
Phoenix, US
1
Wuzhou, CN
1
Tampa, US
1
Morgantown, US
1
Auckland, NZ
1
Rocky Mountain Biological Laboratorylocation not on record
1
Bandelier National Monumentlocation not on record
1
Severin-McDaniel Insect Collectionlocation not on record
1
University of Alberta Museumslocation not on record
1
71 institutions · 663 of 711 vouchered records shown · 47 without an institution code
09Environmental DNA2 detections
Where the DNA of Pellaea breweri 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 found2
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 2 detections have coordinates
Open the map1 country0
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 median12.5 °C 12.5–12.5
Seasonal swing summer↔winter27.0 °C
Max temp (day)18.4 °C
Min temp (night)8.20 °C
Precipitation79.6 mm/mo
Air humidity57.3 %
Moisture balance-38.4 mm/mo
Vapour deficit733 Pa
Wind speed5.80 m/s
Cloud cover36.7 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · 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 Facility1 262 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI2 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics2 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗