Ophioglossum petiolatum is a species of fern in the family Ophioglossaceae. William Jackson Hooker named this species in 1823. The species occurs in parts of Asia, Australia, and North America.
No narrative description available for this taxon yet.
Compounds documented for Ophioglossum petiolatum across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
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 Ophioglossum petiolatum has left across the world's sequence archives.
At a glance
DNA specimens7
Marker genes2
GenBank sequences10
eDNA detections7
Countries6
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.
★matK★rbcL10
plant barcode
06Genome at a glanceCCDB · GoaT
The complete instruction manualOphioglossum petiolatum 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
Genome size58 948 950 000 bp
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).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
HUMAN3.2 Gb
WHEAT17 Gb
THIS GENOME Ophioglossum petiolatum58.95 Gb
FERN Tmesipteris160.45 Gb
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.
CCDB · Automatic manuscript search — R. J. Dyer,J. Pellicer,V. Savolainen,I. Leitch and H. Schneider. 2013. "Genome size expansion and the relationship between nuclear DNA content and spore size in the Asplenium monanthes fern complex (Aspleniaceae)". BMC Plant Biology 13:219-219.
CCDB · ipcn-api-dl — Wang, Z. r. 1986. The polymorphy of fronds and chromosome number of Ophioglossum petiolatum Hook. Acta Bot. Sin. 28: 472–476.
CCDB · book-ipcn73-74 — MITUI, K. 1973. A cytological survey on the Pteridophytes of the Bon Islands. J. Jap. Bot. 48: 247-253.
07Deep time~0.94 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 origin0.94 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 559 records
Wild obs. + sensor380
Museum / vouchered1 178
Other1
Origin
Native9
Range
Area of Occupancy AOO4 392 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 accuracy83% within 1 km
≤100 m 205≤1 km 27≤10 km 5>10 km 44
281 georeferenced · 99 without coordinates
Open the mapobservation + sensor380
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 accuracy37% within 1 km
≤100 m 28≤1 km 79≤10 km 139>10 km 43
289 georeferenced · 889 without coordinates
Open the institutions mapphysical evidence1 178
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 institutions69 of 91 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Tsukuba, JP
306
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
87
GAlocation not on record
72
Sanda, JP
54
Kochi, JP
46
Knoxville, US
43
Odawara, JP
41
Tampa, US
39
Nishihara, JP
35
Paris, FR
35
Bronx, US
29
Osaka, JP
22
Miami, US
21
Christchurch, NZ
21
Beijing, CN
21
Philadelphia, US
18
Kawasaki Shi Tama Ku, JP
15
JP
14
Yunnan Universitylocation not on record
12
Sendai, JP
11
Chengdu, CN
10
TAIElocation not on record
9
Jackson, US
9
Austin, US
9
Columbia, US
9
Kew, GB
8
Jena Microbial Resource Collectionlocation not on record
7
Valdosta State Universitylocation not on record
6
Nishihara, JP
6
Toyama, JP
6
WTUlocation not on record
6
St. Paul, US
6
Taipei, TW
6
Taipei, TW
5
Fort Worth, US
5
Chapel Hill, US
5
Corrientes, AR
5
McWane Science Centerlocation not on record
5
Tomioka, JP
5
Saint Louis, US
4
Minia, EG
4
South Kensington, GB
4
BISHlocation not on record
3
Tuscaloosa, US
3
Zürich, CH
3
US
3
Toyota city nature sanctuarylocation not on record
3
Fukushima Universitylocation not on record
3
University of Stellenboschlocation not on record
3
Little Rock, US
3
Norfolk, US
3
Moscow State Universitylocation not on record
2
Bangkok, TH
2
Bloomington, US
2
KURAlocation not on record
2
Nagano City, JP
2
Seoul, KR
2
Xian, CN
2
Provo, US
1
ENHMlocation not on record
1
Guangzhou, CN
1
Pondicherry, IN
1
EL PASO, US
1
Oskarshamn, SE
1
Nanjing, CN
1
Burlington, US
1
Chongqing Museumlocation not on record
1
Honolulu, US
1
AUAlocation not on record
1
Bando, JP
1
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
1
HAWlocation not on record
1
Guiyang, CN
1
Chiba, JP
1
Chicago, US
1
Dresden, DE
1
Tall Timbers Research Stationlocation not on record
1
CASlocation not on record
1
Chadron, US
1
Logan, US
1
Ann Arbor, US
1
Kagoshima, JP
1
Morgantown, US
1
Kunming, CN
1
Tapachula, MX
1
Guasave, MX
1
University of Louisiana at Monroelocation not on record
1
Vancouver, CA
1
Monastir, TN
1
Cambridge, US
1
Sagamihara, JP
1
91 institutions · 1 155 of 1 178 vouchered records shown · 20 without an institution code
09Environmental DNA7 detections
Where the DNA of Ophioglossum petiolatum 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 found7
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 7 detections have coordinates
Open the map2 countries0
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 median7.40 °C 7.40–16.6
Seasonal swing summer↔winter25.4 °C
Max temp (day)9.60 °C 9.60–19.5
Min temp (night)3.00 °C 3.00–12.4
Precipitation344 mm/mo 331–344
Air humidity64.9 % 64.9–65.6
Moisture balance263 mm/mo 235–263
Vapour deficit428 Pa 428–686
Wind speed2.90 m/s 1.30–2.90
Cloud cover44.6 % 44.6–47.2
CHELSA 1981–2010, ~9 km grid, at location & month of 3 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 Foundation4 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 559 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI7 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics7 specimens↗
NCBIUS National Library of Medicinesequences↗
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗