• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Boletus torosus var. torosus Fr.

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Scientific name
Boletus torosus var. torosus
Common names
Bolet massif
Bolet de plomb
hřib zavalitý
hríb zavalitý
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Anna Kiyashko
Comments etc.
Anna Kiyashko, Irmgard Krisai-Greilhuber, Nicolas Schwab, Alona Yu. Biketova, Daniel Dvořák, Vladimír Kunca, Jan Merta

Assessment Notes

Taxonomic notes

According to Index Fungorum (19.03.2019) it should be named Imperator torosus (Fr.) Assyov, Bellanger, Bertéa, Courtec., Koller, Loizides, G. Marques, J.A. Muñoz, Oppicelli, D. Puddu, F. Rich. & P.-A. Moreau

Why suggested for a Global Red List Assessment?

It is a rare, large and beautiful bolet with mainly Mediterranean distribution. It seems to be restricted by old-growth broadleved forests dominated by beech and oaks, on well-drained calcareous soils. Such landscapes are declined in all parts as a result of human activity.

Geographic range

In Russia it is known only from one locality in the Western Caucasus, on the territory of Caucasian State Biosphere Reserve.

Population and Trends

Population Trend:

Habitat and Ecology

Forms ectomycorrhiza with Quercus and Fagus spp. Occurs in broadleaved and mixed forests on well-drained usually calcareous soil. Fruit bodies more often appear in the warmest season (at least in the Western Caucasus), presumably thermophilous species.

Temperate ForestSubtropical/Tropical Moist Lowland Forest


cutting of old-growth forest dominated by oaks and beeches.

Residential & commercial developmentLogging & wood harvestingHabitat shifting & alteration

Conservation Actions

In Russia it is protected on regional level (Republic of Adygeya) and preserve in Caucasian State Reserve.

Research needed

Use and Trade


Vaasma M., Kalamees K., Raitviir A. Macrofungi of the Caucasian State Nature Reserve. Tallin, 1986. 105 p. (In Russian)
Red Data Book of Republic of Adygeya. Rare and threatened representatives of the regional fauna and flora. Part 1. Introduction. Vegetabilia and Mycota. - The second edition. Maykop: Kachestvo, 2012. 340 p. (In Russian)

Country occurrence

Regional Population and Trends

Country Trend Redlisted