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Suillus luteus (L.) Roussel 1796

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Exotic
Present
New Zealand
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(L.) Roussel
L.
Roussel
1796
34
Fr.
386
ICN
species
Suillus luteus

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luteus

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Suillus luteus (L.) Roussel 1796

Type: Mycorrhizal Fungi; Description: Basidiomata pileate. Pileus dull reddish brown to chocolate brown, 60–120 mm in diameter, convex to plano-convex, mucilaginous; flesh white. Pore surface adnate to subdecurrent; tubes pale yellow at first becoming deep ochre yellow, 5–10 mm long; pores at first concolorous with the tubes becoming spotted dark reddish brown, angular, 0.5–1.0 mm in diameter. Stipe more or less cylindrical, pale yellow above a conspicuous white annulus, brownish below, with numerous reddish brown glandulae, 40–90 mm long. Basidiospores elliptical, 0-septate, 7–9 × 2–3 μm, smooth, pale yellow.
Distribution: Northland, Auckland, Coromandel, Waikato, Bay of Plenty, Taupo, Wanganui, Wellington, Nelson, Buller, Westland, Marlborough Sounds, North Canterbury, Mid Canterbury, South Canterbury, Dunedin, Southland, Chatham Islands.; 1st Record: Birch (1937: as Boletus luteus).
Significance: Isolated from and experimentally shown to be a mycorrhizal partner of Pinus radiata (Chu-Chou 1979).; Host(s): Pinus banksiana, P. contorta, P. lambertiana, P. muricata, P. nigra subsp. laricio, P. patula, P. ponderosa, P. radiata.

Suillus luteus (L.) Roussel 1796

COLLECTIONS EXAMINED: Under (1) Pinus banksiana, Canterbury, Ashley Forest, Feb 1965, R. M. J. Mackenzie, 24679; (2) P. contorta, Eyrewell Forest, Feb 1965, R.M.J.M., 24311; (3) P. lambertiana, Eyrewell Forest, Mar 1965, R.M.J.M., 24683; (4) P. muricata, Eyrewell Forest, Mar 1965, R.M.J.M., 24682; (5) P. patula, Auckland. Kauaeranga State Forest, Mar 1965, R.F.R. McN., 24680; (6) P. pinaster, Canterbury, Chaneys, Feb 1965, R.M.J.M., 24681; (7) P. ponderosa, Burke's Pass, Feb 1965, R.M.J.M., 24313; (8) P. radiata, Auckland, Riverhead State Forest, Jul 1964, R.F.R. McN., 23623; Blockhouse Bay, Mar 1965, R.F.R. McN., 24685; Kauaeranga State Forest, Mar 1965, R.F.R. McN., 24687; Orakeikorako, Apr 1965, R.F.R. McN., 24684; Mamaku, Apr 1965, R.F.R. McN., 24689; Marlborough, Rarangi Bay, Apr 1965, W. A. Holloway, 24688; Nelson, Rabbit Island, W.A.H., 24686.
PILEUS: convex to plano-convex, 6-12 cm diam., mucilaginous, glabrous, sometimes faintly and innately radiately fibrillose, typically dull reddish brown or chocolate brown, occasionally golden brown, tawny, or with greyish or purplish overtones imparted by the thick mucilage layer; cuticle an ixotrichodermium, readily separable; margin often lacerate. HYMENOPHORE: tubes 5-10 mm long, adnate to sub-decurrent, whitish to pallid yellow when young, becoming deep ochre yellow at maturity; pores at first concolorous with tubes, becoming spotted dark reddish brown, irregularly angular, 0.5-(l) mm diam. STIPE: 4-9 cm long, more or less equal, 1-2.5 cm diam., solid, pallid yellow above annulus, brownish below; glandulae numerous apically, yellow to reddish brown, fewer and more scattered basally; flesh white to pallid yellow: annulus conspicuous, occasionally disintegrating with age, superior, broadly sheathing, upper surface sordid white, lower surface with purplish tints. SPORES: spore print yellowish brown, (Clay Color); spores pallid melleous, elliptic-subfusiform, 7.4-9-(10) X 2.5-3.2 µm, smooth. HYMENIUM: basidia hyaline, clavate, 14-26 X 4.5-7.5 µm, 4-spored; cystidia often crowded in groups, hyaline or encrusted with brown, resinous material, cylindrical to clavate, occasionally lageniform, 25-65 X 6-12 µm. HYMENOPHORAL TRAMA: bilateral, of the Boletus subtype; clamp connections absent. CONTEXT OF PILEUS: white to pallid yellow, unchanging on exposure to air. TASTE: mild. SMELL: not distinctive. CHEMICAL REACTIONS: KOH on pileus—dark grey; on context of pileus—immediate red flush turning lilac; NH4OH on pileus—dark grey; on context—immediate red flush turning deep lilac to purplish.
HABITAT: Gregarious or occasionally caespitose under Pinus.
ILLUSTRATIONS: Kallenbach, Die Pilze Mitteleuropas 1 (8): pl. 19. 1928; Smith and Thiers, A Contribution Toward a Monograph of North American Species of Suillus pl. 23. 1964.

Suillus luteus is an introduced species indigenous to the temperate zone of the northern hemisphere.

Singer (1945b) considered that in its natural habitat, S. luteus was associated with 2-needle pines belonging to sect. Lariciones of the genus Pinus, but later (Singer, 1965) added Picea abies and possibly Larix decidua to the list of mycorrhizal partners. Smith and Thiers (1964) commented that Suillus luteus occurred with Pinus and Picea in North America and remarked that its distribution in native coniferous forests was yet to be ascertained. It seems likely that over its natural geographical range Suillus luteus shows a preference for certain species of 2-needle pines, but in New Zealand is capable of forming associations in the field with species of 2-, 3-, and 5-needle pines in the absence of its preferred partners. Experimental data support this conclusion, for in pure culture S. luteus has been shown to form mycorrhizas with a number of 2-, 3-, and 5-needle pines as well as Picea abies, Larix decidua, and L. occidentalis (Slipp and Snell, 1944). Birch (1937) has proved experimentally that Suillus luteus forms mycorrhizas with Pinus radiata in New Zealand.

Suillus luteus is an excellent edible fungus. Only young and firm fruit-bodies should be selected, and the mucilaginous pellicle of the pileus should first be removed.

TYPE LOCALITY: Europe.

Suillus luteus (L.) Roussel 1796

Pileus 10-23 cm, diam., glutinous, dark brown drying lighter brown, pellicle peeling, flesh soft, yellow. Pores 5-10 mm, long X 0.5-1 mm, diam., yellow, becoming olive brown with age, usually adnate, occasionally slightly decurrent. Stipe 1.5-2.5 X 5-8 cm., with a well developed membranous ring, yellow with more or less conspicuous glandulae above, light brown below, Spores 9-10 X 3.5um.
commonly associated throughout the country with Pinus radiata, though more abundant in the South than in the North, its distribution being somewhat complementary to that of Amanita muscaria which is also associated with this tree.
The New Zealand form of this fungus appears to be usually more robust, and with more strongly developed yellow colour than the common European forms as illustrated by Bresadola (1931) and Kallenbach (1940).

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Boletus luteus L. (1753)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel 1796
Suillus luteus (L.) Roussel (1796)

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Suillus luteus (L.) Roussel 1796
Canada
Suillus luteus (L.) Roussel 1796
New Zealand
Auckland
Suillus luteus (L.) Roussel 1796
New Zealand
Bay of Plenty
Suillus luteus (L.) Roussel 1796
New Zealand
Chatham Islands
Suillus luteus (L.) Roussel 1796
New Zealand
Coromandel
Suillus luteus (L.) Roussel 1796
New Zealand
Dunedin
Suillus luteus (L.) Roussel 1796
New Zealand
Fiordland
Suillus luteus (L.) Roussel 1796
New Zealand
Marlborough Sounds
Suillus luteus (L.) Roussel 1796
New Zealand
Mid Canterbury
Suillus luteus (L.) Roussel 1796
New Zealand
Nelson
Suillus luteus (L.) Roussel 1796
New Zealand
North Canterbury
Suillus luteus (L.) Roussel 1796
New Zealand
Otago Lakes
Suillus luteus (L.) Roussel 1796
New Zealand
South Canterbury
Suillus luteus (L.) Roussel 1796
New Zealand
Stewart Island
Suillus luteus (L.) Roussel 1796
New Zealand
Taupo
Suillus luteus (L.) Roussel 1796
New Zealand
Wanganui
Suillus luteus (L.) Roussel 1796
New Zealand
Wellington
Suillus luteus (L.) Roussel 1796
United Kingdom

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1cb1a653-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 March 2000
22 February 2013
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