Habitat GIFTdamp rocks and stony stream beds, chiefly on limestone among mixed woods
05DNA & barcodingmolecular
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 Dennstaedtia wilfordii has left across the world's sequence archives.
At a glance
06Genome at a glanceCCDB
The complete instruction manualDennstaedtia wilfordii 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 622×CCDB · ipcn-api-dl · CCDB · book-ipcn72
CCDB · ipcn-api-dl — Kawakami, S. M., M. Ito, S. Kawakami & K. Kondo. 1997. Induction of apogamy in twelve fern species and the study of their somatic chromosomes. Chromosome Sci. 1: 89–96.
CCDB · book-ipcn72 — KURITA, S. 1972. Chromosome numbers of some Japanese Ferns (8). Ann. Rep. Foreign Students Coll. Chiba Univ. 3: 47-53.
CCDB · ipcn-api-dl — Wang, Z. & Q. Xia. 1984. Cytological observations on some species of Dryopteris and Polystichum from China. Acta Bot. Sin. 26: 1–10.
CCDB · book-ipcn72 — KURITA, S. 1972. Chromosome numbers of some Japanese Ferns (8). Ann. Rep. Foreign Students Coll. Chiba Univ. 3: 47-53.
CCDB · book-ipcn67-71 — MITUI, K. 1968. Chromosomes and speciation in ferns. Sci. Rep. Tokyo Kyoiku Daigaku Sect. B 13: 285-333.
08Occurrence & distribution
Record type798 records
Wild obs. + sensor333
Museum / vouchered464
Other1
Range
Area of Occupancy AOO1 188 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 accuracy50% within 1 km
≤100 m 19≤1 km 11≤10 km 13>10 km 17
60 georeferenced · 273 without coordinates
Open the mapobservation + sensor333
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 accuracy100% within 1 km
≤100 m 1
1 georeferenced · 463 without coordinates
Open the institutions mapphysical evidence464
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 institutions17 of 36 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Beijing, CN
148
Chengdu, CN
76
Yangling, CN
42
Xian, CN
38
Wuhan, CN
30
Nanjing, CN
19
Beijing Normal Universitylocation not on record
12
Guangzhou, CN
12
Kunming, CN
9
Yunnan Universitylocation not on record
9
Zhejiang Universitylocation not on record
8
Jiangxi Universitylocation not on record
6
Xining, CN
5
Xinxiang, CN
5
东北师范大学自然博物馆location not on record
4
Shanghai Chenshan Botanical Gardenlocation not on record
3
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record
3
Tianjin Natural History Museumlocation not on record
3
Chengdu, CN
3
Guiyang, CN
3
LDlocation not on record
3
Shanghai, CN
3
Hangzhou, CN
2
Obihiro Centennial City Museumlocation not on record
2
Zhuzhou, CN
2
Hokkaido University Museumlocation not on record
2
Ischia Marine Centrelocation not on record
2
Peking Universitylocation not on record
1
Guangxi Institute of Traditional Medical and Pharmaceutical Scienceslocation not on record
1
Central China Normal Universitylocation not on record
1
KOMlocation not on record
1
Zhengzhou, CN
1
San Jose State University, Museum of Birds and Mammalslocation not on record
1
lbglocation not on record
1
J. Rusek Collectionlocation not on record
1
Wuhan, CN
1
36 institutions · 463 of 464 vouchered records shown · 1 without an institution code
