Psathyrella ammophila is a species of fungus in the family Psathyrellaceae and is found throughout Europe. Commonly known as the dune brittlestem, this agaric primarily grows on sand dunes near marram grass, feeding saprotrophically on the decaying roots. The season of growth is generally May to November. P. ammophila is variable in appearance, changing colour and shape during its lifespan. Initially bell-shaped and tan or pale brown, the cap gradually flattens and darkens, becoming dark brown with a depressed shape as it ages.
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 Psathyrella ammophila has left across the world's sequence archives.
At a glance
DNA specimens3
Marker genes1
GenBank sequences9
eDNA detections62
Countries9
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.
★ITS9
fungal barcode
08Occurrence & distribution
Record type2 644 records
Wild obs. + sensor2 320
Museum / vouchered306
Other18
Origin
Native7
Range
Area of Occupancy AOO3 924 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 accuracy34% within 1 km
≤100 m 495≤1 km 201≤10 km 1 311>10 km 35
2 042 georeferenced · 278 without coordinates
Open the mapobservation + sensor2 320
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 accuracy74% within 1 km
≤100 m 30≤1 km 54≤10 km 28>10 km 2
114 georeferenced · 192 without coordinates
Open the institutions mapphysical evidence306
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 institutions24 of 42 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Tartu, EE
57
Copenhagen, DK
34
Olocation not on record
22
Blacksburg, US
18
WTUlocation not on record
17
BDBClocation not on record
14
San Sebastián, ES
9
LDlocation not on record
9
WU-MYClocation not on record
8
Kew, GB
8
Adam Mickiewicz University in Poznańlocation not on record
7
MeiseBGlocation not on record
6
Vancouver, CA
5
ILLSlocation not on record
4
Chicago, US
4
Toronto, CA
3
Grupo Actinomicetales Merida Facultad de Medicinalocation not on record
3
Philadelphia, US
3
Durham, US
3
nsnflocation not on record
3
SLU Artdatabankenlocation not on record
3
Kyiv, UA
3
Karlsruhe, DE
3
Bronx, US
2
Auckland, NZ
2
2
TENN-Flocation not on record
2
Bardejov, SK
2
Helsinki, FI
1
Uppsala, SE
1
JA-CAGPDS-CAMlocation not on record
1
Tilburg, NL
1
California State University, East Baylocation not on record
1
Kensington, AU
1
Görlitz, DE
1
Odawara, JP
1
University of Oslo, Natural History Museumlocation not on record
1
Museo Entomologico de Leonlocation not on record
1
CA
1
GJOlocation not on record
1
Gijón, ES
1
Centro de Estudios Superiores del Estado de Sonoralocation not on record
1
42 institutions · 270 of 306 vouchered records shown · 36 without an institution code
09Environmental DNA62 detections
Where the DNA of Psathyrella ammophila 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 found62
Studies independent surveys3
Countries9
Signal confidence: moderateweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 62 detections have coordinates
Open the map9 countries0
Other Urban/disturbed/developedAmmophila dune with Elytrigia juncea
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.
Measured at samplingin-field
pH6.80
Conductivity86.0 µS/cm
Organic carbon0.7 %
Water content2.46 %
Nitrate-N7.00 mg/kg
Phosphorus57.0 mg/kg
Clay5.90 %
Sand93.1 %
Depth0 m
SoilCalcarosol
1 sample with on-site data · median with range · describes the sample, not the organism
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median14.9 °C 11.6–17.4
Seasonal swing summer↔winter22.3 °C
Max temp (day)18.8 °C 16.3–22.1
Min temp (night)10.2 °C 7.10–13.8
Precipitation88.6 mm/mo 12.0–94.8
Air humidity59.7 % 52.6–60.4
Moisture balance-31.3 mm/mo -75.0–44.5
Vapour deficit684 Pa 605–819
Wind speed3.60 m/s 2.70–3.90
Cloud cover38.8 % 36.1–41.3
CHELSA 1981–2010, ~9 km grid, at location & month of 58 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 Foundation3 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 644 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI62 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics3 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗