Bird Families

Olive brown oak (Suillellus luridus)


Current title

Index FungorumSuillellus luridus (Schaeff.) Murrill
MycoBankSuillellus luridus (Schaeffer) Murrill

Systematic position

Etymology of the species epithet

Lūridus, a, um 1) pale yellow, waxy, deadly, 2) bot. dirty yellow, dirty brown.


  • Boletus luridus Schaeff., Fung. bavar. palat. nasc. (Ratisbonae) 4: 78 (1774)
  • Leccinum luridum (Schaeff.) Gray, Nat. Arr. Brit. Pl. (London) 1: 648 (1821)
  • Tubiporus luridus (Schaeff.) P. Karst., Revue mycol., Toulouse 3 (no. 9): 16 (1881)
  • Dictyopus luridus (Schaeff.) Quél., Enchir. fung. (Paris): 160 (1886)
  • Boletus tuberosus Bull., Hist. Champ. Fr. (Paris) 1: 326 (1791)
  • Boletus rubeolarius Bull., Herb. Fr. (Paris) 11: tab. 490 (1791)
  • Boletus erythrentheron Bezděk [as ‘erythroteron’], Houby jedlé a jim podobné jedovaté: 181 (1901)

Other names: Dirty-brown bolette, ordinary Dubovik, Poddubnik, Poddubovik.

Phylogenetic studies carried out in 2013 showed that Boletus luridus and some other red pore boletus mushrooms are not closely related to real boletus, or porcini mushrooms (genus Boletus). This was the reason for the transfer B. luridus to the genus Suillellus, to more closely related species.



The cap is 30 - 180 (200) mm in diameter, at a young age it is almost spherical with an inward edge, when ripe it opens to a hemispherical, cushion-shaped one. The surface is smooth, velvety, olive-brown, yellow-brown, brown, sometimes with red tints, when touched it darkens to a dark brown, almost black color.

The hymenophore is tubular. The tubes are yellow-green, up to 20 mm long, easily detached from the cap. Round pores, 2 - 3 pcs. 1 mm, at a young age yellow with a green tinge, then orange-red at the stem and yellow to the edge of the cap. Pores and tubules turn blue when damaged.


The leg is 50 - 150 mm long, 10 - 50 mm in diameter, tuberous at a young age, then stretches, remaining thickened downwards or becoming cylindrical.The surface is ocher-yellow, yellow, orange, red-brown, often the color smoothly passes from red shades at the base to yellow shades at the cap. Along the entire length with a well-pronounced red, red-brown mesh pattern. Turns blue when damaged.


The flesh is light, pale yellow, red-brown at the base of the stem, when cut quickly turns blue-green, light blue or blue. A characteristic feature is the presence of a dark, often red layer at the place of attachment of the hymenophore to the cap.


Spores 11.5 - 14.8 (17) × 4.9 - 6.9 μm, Q = 2.1 - 2.5, fusiform-ellipsoidal,.

Basidia 40 - 50 × 12 - 16 μm, 4-spore, without a buckle at the base.

Cheilocystids and pleurocystids 35 - 65 × 5 - 10 microns, fusiform, cylindrical,.

Ecology and distribution

Grows singly and in groups in deciduous and mixed forests. Forms mycorrhiza with oak, beech, birch and some other trees, including conifers.

In Western Siberia, it occurs in the Novosibirsk Academgorodok, where it behaves quite unusual: it is not noted in natural forests, but at the same time it is common and bears fruit abundantly within the boundaries of residential buildings, on lawns along streets, alleys, in park zones, on sparse meadows in association with birch and linden, on the territory of the arboretum of the Central Siberian Botanical Garden of the SB RAS was recorded in a mixed oak-linden planting.

Olive brown oak tree is associated with willow (Clitopilus prunulusa) symbiotic or parasitic relationship, the two species often bear fruit together.


The divisions correspond to the decades of the month.

Nutritional properties

Information about edibility is contradictory. It is considered by various authors to be edible, poisonous or poisonous with the participation of alcohol.Most opinions agree that this type can be consumed after preliminary boiling with a decoction drain and careful cooking.

Conservation status

  • Red Data Book of Krasnoyarsk Territory 2012
    Rare view. Security measures are not defined.

Related materials

  1. Nuhn M. E., Binder M., Taylor A. F. S, Halling R. E., Hibbett D. S. Phylogenetic overview of the Boletineae. // Fungal Biology. - 2013. - V. 117. - P. 479-511. DOI: 10.1016 / j.funbio.2013.04.008.
  2. Watling R., Hills A. E. Boletes and their allies. Revised and enlarged edition. - Edinburg, United Kingdom: Royal Botanical Gardens, (British Fungus Flora. Agarics and boleti. Vol. 1), 2005 .-- 173 p. - P. 51. [As Boletus luridus]
  3. Breitenbach J, Kränzlin F. Fungi of Switzerland. A contribution to the knowledge of the fungal flora of Switzerland. Vol 3. Boletes and agarics. 1st part. Strobilomycetaceae and Boletaceae, Paxillaceae, Gomphidiaceae, Hygrophoraceae, Tricholomataceae, Polyporaceae (lamellate). - Lucerne: Verlag Mykologia, 1991 .-- 360 p. - P. 56. [As Boletus luridus]
  4. Bessette A. R., Bessette A. E., Roody W. C. North American Boletes: A Color Guide to the Fleshy Pored Mushrooms. - Syracuse: Syracuse University Press., 2000 .-- 400 p. - P. 126. [As Boletus luridus]
  5. Red Data Book of the Krasnoyarsk Territory. In 2 volumes. Volume 2. Rare and endangered species of wild plants and fungi / Otv. ed. N.V. Stepanov. 2nd edition. - Krasnoyarsk: Siberian Federal University, 2012 .-- 572 p. - P. 492. [How Boletus luridus]

Link to this page for prints