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  • Under Assessment
  • Preliminary Assessed
  • VUAssessed
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Buchwaldoboletus lignicola (Kallenb.) Pilát

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Scientific name
Buchwaldoboletus lignicola
Author
(Kallenb.) Pilát
Common names
Wood Bolete
Houtboleet
žltavec drevový
hřib dřevožijný
Brauner Nadelholzröhrling
Бухвальдоболет древесинный
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Boletales
Family
Boletaceae
Assessment status
Assessed
Preliminary Category
VU C2a(i)
Proposed by
Tatyana Svetasheva
Assessors
Tatyana Svetasheva
Editors
Anders Dahlberg
Contributors
A. Martyn Ainsworth
Comments etc.
Daniel Dvořák, Irmgard Krisai-Greilhuber, Vladimír Kunca, Armin Mešić, Wim A. Ozinga, Irja Saar, Christian Schwarz, Else Vellinga

Assessment Notes

R-L categories correct, but text here does not match final assessment. Updated version will be published in IUCN´s Red List June or Nov 2019.

Justification

Buchwaldoboletus lignicola is a rare wood-inhabiting bolete associated with Phaeolus schweinitzii as a mycoparasite or a saprotroph at the same substrate. It’s is reported from 26 countries of Europe, Russia, Turkey, China and USA. In most countries it’s considered as a rare or very rare species, in 9 countries is redlisted with a category Cr, En, Vu, NT with declining. Rather strict range of ecological requirements of this species and dependence on presence of two hosts determinate the necessity of protection at the global level.
Preliminary assessment: There are 330 records in approx. 120 localities globally, the total population is expected < 1200, the estimated number of mature individuals approx. 12000.  The most appropriate could be category NT under criterion C1


Taxonomic notes

Synonymy:
Boletus lignicola Kallenb.
Gyrodon lignicola (Kallenb.) Heinem.
Phlebopus lignicola (Kallenb.) M.M. Moser
Pulveroboletus lignicola (Kallenb.) E.A. Dick & Snell
Xerocomus lignicola (Kallenb.) Singer


Why suggested for a Global Red List Assessment?


Geographic range

Buchwaldoboletus lignicola is a Holarctic species widespread in Eurasia and North America. It’s found in 26 countries, but almost overall it’s considered as a rare.


Population and Trends

It is considered as a rare or a very rare species in most countries and redlisted in 9 of them as Cr, En, Vu, NT. Usually a few findings per country are registered in their databases, except UK (54). General trends of existence are not entirely clear, however the specific requirements of this species to a host make it threatened and needed to be protected.
In total about 330 finds were recorded in the world with majority in Europe (about 290), but also in USA (~ 20), Russia, Africa, China (less then 20 in sum).  However the number of known localities is much less (map of GBIF and publications):  approx. 110 in Eurasia, 10 in USA, so 120 in sum and total population is expected < 1200. Since only fruitbody is usually found per locality, the number of mature individuals is estimated approx.  12000. The length of evaluation period used for these estimates (50 years = three generations). The most appropriate Criterion C1, NT.

Population Trend: Uncertain


Habitat and Ecology

This is xylotrophic fungus with a complicative life strategy.  Usually it grows on the rotten wood of Pinacea trees (Pinus sylvestris, P. pinaster, P.strobus, P. nigra, Larix decidua, Pseudotsuga menziesii, Picea abies) previously colonized by another rare fungus, Phaeolus
schweinitzii (Fr.) Pat., a brown-rot fungus, which leads to the death of the host plant and then continuing to grow on the stump as saprotroph (Kuthan & Sedivy 1971). Sometimes it was also found just to be saprotrophic whithout any neghbourhood of other fungi. The species is known mostly from warm southern or temperate regions, but also a few records are from the northern regions with a mild oceanic climate (Funga Nordica, 2012).

Boreal ForestTemperate ForestSubtropical/Tropical Dry Forest

Threats

The main threat is deforestation of coniferous forests, including clearing of old stumps. Also grassroot fires can lead to destroying of habitat and destruction of hosts.

Logging & wood harvestingIncrease in fire frequency/intensity

Conservation Actions

Site/area protectionSite/area managementCaptive breeding/artificial propagation

Research needed

Population size, distribution & trendsLife history & ecologyPopulation trends

Use and Trade

Its edibility is unknown.

Unknown

Bibliography

Ortiz-Santana B. A PRELIMINARY SURVEY OF THE GENUS BUCHWALDOBOLETUS /Bulletin of the Buffalo Society of Natural Sciences, Volume 40, 2011
Venturella G. Buchwaldoboletus lignicola (Boletaceae), a rare basidiomycete from Europe /Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, DOI: 10.1080/11263504.2017.1313791
Aryal HP, Budathoki U. 2013. Buchwaldoboletus Lignicola (Basidiomycetes), an inedible wild mushroom new to Nepal. Our Nature 11(1): 31–35.
doi:10.3126/on.v11i1.8241.
Biketova AY, Kosakyan A, Wasser SP, Nevo E. 2016. New,noteworthy, and rare species of the genus Boletus in Israel.Plant Biosyst 150(5): 876–886. doi:10.1080/11263504.2014.990537.
Mikšik M. Rare and protected species of boletes of the Czech Republic. Field Mycology. 2012;13:8–16. http://dx.doi.org/10.1016/j.fldmyc.2011.12.003
Nuhn ME, Binder M, Taylor AF, Halling RE, Hibbett DS.2013.Phylogenetic overview of the Boletineae. Fungal Biol 117(7–8): 479–511
Ainsworth, A.M., Smith, J.H., Boddy, L., Dentinger, B.T.M., Jordan, M., Parfitt, D., Rogers, H.J. & Skeates, S.J. (2013). Red List of Fungi for Great Britain: Boletaceae. A pilot conservation assessment based on national database records, fruit body morphology and DNA barcoding. Species Status 14 JNCC Peterborough.  http://jncc.defra.gov.uk/page-6497 
GBIF https://www.gbif.org/occurrence/search?offset=0&q=Buchwaldoboletus lignicola


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted