Ischnoderma resinosum is a species of fungus in the family Fomitopsidaceae. Commonly known as the late fall polypore, resinous polypore, or benzoin bracket, this shelf mushroom is 7 – across, velvety, dark red/brown, darkening and forming zones in age. Its spongy but tough, sweet-smelling flesh exudes a red liquid when young. This fungus fruits on hardwood logs and stumps in late autumn. A widely distributed species, it has been recorded from Africa, Asia, Europe, and North America. The species was originally described as Boletus resinosus in 1794 by German botanist Heinrich Schrader. It has acquired an extensive synonymy in its taxonomic history, having been juggled between several genera. Petter Karsten transferred it to Ischnoderma in 1879 to give it the name by which it is currently known. Young, soft specimens may be cooked and eaten, but the species becomes hard and unpalatable later in life. Ischnoderma benzoinum is similar and has darker flesh.
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 Ischnoderma resinosum has left across the world's sequence archives.
At a glance
DNA specimens2
Marker genes1
GenBank sequences10
eDNA detections3
Countries5
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.
★ITS10
fungal barcode
06Genome at a glanceGoaT · NCBI
The complete instruction manualIschnoderma resinosum 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 size≈34 145 666 bp assembly estimate
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
THIS GENOME Ischnoderma resinosum0.03 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
HUMAN3.2 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
Assembly levelChromosome
07Deep time~5.2 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 origin5.2 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 type14 696 records
Wild obs. + sensor14 076
Museum / vouchered617
Other3
Range
Area of Occupancy AOO30 408 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 accuracy80% within 1 km
≤100 m 7 447≤1 km 2 218≤10 km 1 828>10 km 639
12 132 georeferenced · 1 944 without coordinates
Open the mapobservation + sensor14 076
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 accuracy42% within 1 km
≤100 m 42≤1 km 90≤10 km 153>10 km 32
317 georeferenced · 300 without coordinates
Open the institutions mapphysical evidence617
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 institutions30 of 59 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Bronx, US
65
Olocation not on record
58
Chicago, US
42
Toronto, CA
30
Görlitz, DE
27
Uppsala, SE
26
Copenhagen, DK
25
Helsinki, FI
25
Cincinnati, US
23
LDlocation not on record
21
SLU Artdatabankenlocation not on record
20
TENN-Flocation not on record
18
Tartu, EE
16
WTUlocation not on record
14
HabitatVisionlocation not on record
12
Davis and Elkins Collegelocation not on record
11
Université de Montréal Biodiversity Centrelocation not on record
11
St. Paul, US
10
WU-MYClocation not on record
9
UNINE:NEUlocation not on record
8
Tomioka, JP
7
GJOlocation not on record
7
Karlsruhe, DE
6
ILLSlocation not on record
6
Universidade de Lisboa, Museu Bocagelocation not on record
5
IFR-DNFlocation not on record
4
Vancouver, CA
4
CA
4
Warsaw, PL
4
Trondheim, NO
3
Slovenian Forestry Institutelocation not on record
3
University of the Basque Country (UPV/EHU)location not on record
3
Acadia Universitylocation not on record
3
IPA/SPlocation not on record
3
Senckenberg Gesellschaft für Naturforschung: Senckenberg Forschungsinstitut und Naturmuseumlocation not on record
3
Ann Arbor, US
3
Philadelphia, US
2
MAlocation not on record
2
Kew, GB
2
MeiseBGlocation not on record
2
McWane Science Centerlocation not on record
2
Mlocation not on record
2
Salzburg, AT
2
BRNUlocation not on record
1
Osaka, JP
1
Logan, US
1
Gijón, ES
1
University of Tennessee at Chattanoogalocation not on record
1
Bardejov, SK
1
San Sebastián, ES
1
Odawara, JP
1
Royal Ontario Museum, TRTC Fungariumlocation not on record
1
Zürich, CH
1
Adam Mickiewicz University in Poznańlocation not on record
1
Blacksburg, US
1
Bando, JP
1
Colorado State Universitylocation not on record
1
Göteborg, SE
1
Catholic University of Pekinglocation not on record
1
59 institutions · 569 of 617 vouchered records shown · 48 without an institution code
09Environmental DNA3 detections
Where the DNA of Ischnoderma resinosum 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 found3
Studies independent surveys2
Countries2
Signal confidence: moderateweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 3 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 median9.50 °C 8.60–10.4
Seasonal swing summer↔winter22.6 °C
Max temp (day)14.3 °C 13.3–15.3
Min temp (night)4.80 °C 4.00–5.70
Precipitation72.8 mm/mo 48.6–96.9
Air humidity58.9 % 57.3–60.6
Moisture balance8.70 mm/mo 7.50–9.90
Vapour deficit529 Pa 448–610
Wind speed3.10 m/s 2.20–4.00
Cloud cover44.7 % 43.6–45.8
CHELSA 1981–2010, ~9 km grid, at location & month of 2 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 Foundation6 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility14 696 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI3 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics2 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗