Athyrium yokoscense, commonly known as Asian common ladyfern in English and as Hebino-negoza in Japanese, is a species of fern in the family Athyriaceae. These tough plants live primarily in and around mine sites and thrive in soils contaminated with high concentrations of heavy metals, such as zinc, cadmium, lead, and copper. A. yokoscense is indigenous to Japan, Korea, eastern Siberia and northeastern China and has been known for centuries to tolerate phytotoxic mining sites. The predominance and concentration of this fern species at a particular region was used to identify potential mining sites. The primary potential of A. yokoscense is in its phytoremediative ability to accumulate toxic metals from soils contaminated with heavy metals, so it may have some long-term commercial importance. No medicinal or culinary values of this fern species have been studied or confirmed.
No narrative description available for this taxon yet.
Compounds documented for Athyrium yokoscense 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 Athyrium yokoscense has left across the world's sequence archives.
At a glance
DNA specimens12
Marker genes3
GenBank sequences10
eDNA detections15
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★rbcL8★ITS1
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualAthyrium yokoscense 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 802×CCDB · book-LoveLove1977 · CCDB · eflora
CCDB · book-LoveLove1977 — Hirabayashi 1970b
CCDB · eflora
2n 81×CCDB · book-LoveLove1977
CCDB · book-LoveLove1977 — o Kurita 1960
n 401×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — HIRABAYASHI, H. 1970. Chromosome numbers in several species of the Aspidiaceae (2). J. Jap. Bot. 45: 45-52.
07Deep time~2.66 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 origin2.66 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 type7 939 records
Wild obs. + sensor2 198
Museum / vouchered5 741
Range
Area of Occupancy AOO19 324 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 accuracy37% within 1 km
≤100 m 119≤1 km 25≤10 km 146>10 km 99
389 georeferenced · 1 809 without coordinates
Open the mapobservation + sensor2 198
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 accuracy36% within 1 km
≤1 km 103≤10 km 178>10 km 2
283 georeferenced · 5 458 without coordinates
Open the institutions mapphysical evidence5 741
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 institutions46 of 96 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
2 912
Nagano City, JP
488
Shinshu Universitylocation not on record
279
Toyama, JP
224
Tomioka, JP
192
Akita Prefectural Museumlocation not on record
166
Bando, JP
148
JP
112
Beijing, CN
86
Osaka, JP
79
Kawasaki Shi Tama Ku, JP
77
Iwate Prefectural Museumlocation not on record
70
DMZ botanic gardenlocation not on record
68
KR
64
National Institute of Biological Resourceslocation not on record
56
Sendai, JP
53
Chiba, JP
36
Sugadaira Research Station, Mountain Science Center, University of Tsukubalocation not on record
34
Fukushima Universitylocation not on record
33
Omachi Alpine Museumlocation not on record
33
Kochi, JP
28
Zhejiang Universitylocation not on record
26
Herbarium of the Department of Botany, University of Tokyolocation not on record
25
KOMlocation not on record
25
KURAlocation not on record
24
Korea National Arboretumlocation not on record
24
DNSMlocation not on record
22
SIHUlocation not on record
22
Elocation not on record
19
Toyota city nature sanctuarylocation not on record
18
Moscow State Universitylocation not on record
17
Nanjing, CN
16
Sagamihara, JP
13
Hiratsuka City Museumlocation not on record
12
Nishihara, JP
11
GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record
11
KIRMlocation not on record
11
Kushiro City Museumlocation not on record
11
Nishihara, JP
10
Odawara, JP
10
Obihiro Centennial City Museumlocation not on record
8
Kyoto Universitylocation not on record
7
Taipei, TW
6
Ann Arbor, US
6
Jiangxi Universitylocation not on record
6
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
5
Servico de Microbiologia e Imunologialocation not on record
5
Parthenon Tama History Museumlocation not on record
5
Hangzhou, CN
5
Wlocation not on record
5
Auckland, NZ
5
Philadelphia, US
4
Yunnan Universitylocation not on record
4
Yangling, CN
4
Chengdu, CN
4
Hokkaido University Museumlocation not on record
3
Shanghai, CN
3
Wuhan, CN
3
Chapel Hill, US
3
Institute of the biological problems of the North FEB RASlocation not on record
3
Central China Normal Universitylocation not on record
3
Morgantown, US
3
Sanda, JP
3
Beijing Normal Universitylocation not on record
3
ENHMlocation not on record
2
Shanghai, CN
2
Otaru, JP
2
Guilin, CN
2
The Cattle Museumlocation not on record
2
Nanchong, CN
2
Saint Louis, US
2
Tokushima, JP
2
Taipei, TW
2
Berlin, DE
2
J.F.Oberlin Universitylocation not on record
2
KNAMlocation not on record
2
WTUlocation not on record
2
Xian, CN
1
BMlocation not on record
1
东北师范大学自然博物馆location not on record
1
Minia, EG
1
Plocation not on record
1
Tianjin Natural History Museumlocation not on record
1
Zhengzhou, CN
1
Shanghai Chenshan Botanical Gardenlocation not on record
1
Burlington, US
1
Wuhan, CN
1
CASlocation not on record
1
Guangzhou, CN
1
Provincia di Livornolocation not on record
1
San Jose State University, Museum of Birds and Mammalslocation not on record
1
KIWElocation not on record
1
Bloomington, US
1
Chongqing Museumlocation not on record
1
IWEP FEB RASlocation not on record
1
Wellington, NZ
1
96 institutions · 5 716 of 5 741 vouchered records shown · 15 without an institution code
09Environmental DNA15 detections
Where the DNA of Athyrium yokoscense 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 found15
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 15 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 median7.40 °C 7.40–7.40
Seasonal swing summer↔winter25.4 °C
Max temp (day)9.60 °C
Min temp (night)3.00 °C
Precipitation344 mm/mo
Air humidity64.9 %
Moisture balance263 mm/mo
Vapour deficit428 Pa
Wind speed2.90 m/s
Cloud cover44.6 %
CHELSA 1981–2010, ~9 km grid, at location & month of 11 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 Facility7 939 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI15 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics12 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↗