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Suillus piperatus (Bull.) Kuntze 1898

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(Bull.) Kuntze
Bull.
Kuntze
1898
535
Fr.
388
ICN
species
Suillus piperatus

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piperatus

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Suillus piperatus (Bull.) Kuntze 1898

COLLECTIONS EXAMINED: Under (1) Pinus radiata, Auckland, Riverhead State Forest, Jul 1964, Jan 1967, R.F.R. McN., 23604, 25895; Parnell, Jun 1965. J. M. Dingley, 24642; Goldie's Bush, Jun 1965, J.M.D., 24641; Pt Chevalier, Jul 1967, R.F.R. McN., 25947; (2) Pseudotsuga menziesii, Rotorua, Whakarewarewa. May 1964, Apr 1967, R.F.R. McN., 23608-9, 25781.
PILEUS: convex to plano-convex, 2-6 cm diam., slightly mucilaginous under wet conditions, otherwise dry, glabrous to subglabrous, brownish orange, yellowish brown, or cinnamon brown; cuticle a thin and rather fragmentary trichodermium overlying interwoven, repent, gelatinised hyphae; margin entire. HYMENOPHORE: tubes to 6mm long, adnate to subdecurrent, yellowish brown to reddish brown at maturity; pores concolorous with tubes or darker reddish brown angular to irregularly angular, often radially elongated near apex of stipe, 0.5-1 mm diam., often toothed. STIPE: 2.5-6 cm long, more or less equal, 3-7 mm diam., solid, dry, subpruinose to subglabrous, sometimes finely reticulate apically, concolorous with or paler than pileus, golden yellow basally; glandulae absent; flesh yellow, often with red tints apically; basal mycelium golden yellow; annulus absent. SPORES: spore print brown (between Prout's Brown and Snuff Brown); spores melleous, elliptic-subfusiform, 7.7-10.5-(14) X 3.1-4.2-(4.8) µm, smooth. HYMENIUM: basidia hyaline, clavate 18-27 X 6-9.5 µm., 4-spored; cystidia sparse, hyaline or encrusted with brown, resinous material, subclavate to ventricose-rostrate, occasionally strangulated, 30-60 X 4.5-7.5 µm. HYMENOPHORAL TRAMA: bilateral, of the Boletus subtype; clamp connections absent. CONTEXT OF PILEUS: sordid white to sordid cream, usually with red tints, unchanging on exposure to air. TASTE: acrid, peppery. SMELL: not distinctive. CHEMICAL REACTIONS: KOH and NH4OH on pileus and context of pileus—no definite or constant reaction.
HABITAT: Gregarious or occasionally caespitose under introduced conifers.
ILLUSTRATIONS: Coker and Beers, The Boletaceae of North Carolina pl. 25. pl. 62, figs. 11, 12. 1943; Wakefield and Dennis, Common British Fungi pl. 89, fig. 2. 1950.

Suillus piperatus is an introduced species indigenous to temperate regions of the northern hemisphere. Of the two commonly recognised varieties of this species, var. piperatus and var. amarellus (Quel.) Singer, New Zealand collections agree with the type variety. The possession of a reddish hymenophore is an unusual character among the Suilli. This character, together with the absence of both glandulae and an annulus, led Singer (1938) to erect the section Piperati to accommodate Suillus piperatus. Two further species were later transferred to this section by Singer. Smith and Thiers (1964) excluded sect. Piperati from Suillus on the grounds of a number of features correlated with the reddish hymenophore, but did not suggest an alternative disposition of the section.

Suillus piperatus also differs physiologically from other Suillus. Tyler, Benedict, and Stuntz (1965) showed that of the 17 species of Boletaceae tested for urea accumulation, including nine species of Suillus, only S. piperatus showed a moderate level of urea; the remainder were urea-negative. It would be of interest to see whether tests on S. rubinus (W. G. Smith) O. Kuntze and S. rubinellus (Peck) Singer, the remaining two species included in sect. Piperati by Singer (1962), produced similar results.

It has been shown in Europe and North America that S. piperatus is capable of forming mycorrhizal associations in nature with many genera of conifers as well as angiosperm genera such as Fagus, Quercus, Betula, and Populus. In New Zealand, the species has been collected only under introduced conifers. Rawlings (1951) recorded its association with Pinus contorta var. latifolia and P. ponderosa, in addition to the two species named above.

The peppery taste of Suillus piperatus makes it unsuitable for eating in quantity. However, it is not a poisonous species and may be added in small quantities to other edible species to sharpen the flavour.

S. piperatus is characterised by the dry to slightly mucilaginous pileus, reddish hymenophore, absence of glandulae and an annulus, and small fruitbodies. Was first recorded from New Zealand by Rawlings (1951).

TYPE LOCALITY: France.

Suillus piperatus (Bull.) Kuntze 1898

Pileus 4-7 cm. slightly glutinous at first, fawn to light brown, smooth; flesh with a strong peppery taste. Pores about 0.5 mm. diam., dull brown to dark red. Stipe 1-1.5 X 5-8 cm., smooth or indistinctly striate, pale fawn to darker fawn at base; flesh of stipe bright yellow at base, usually attached to yellow rhizomorphs. Spores 8-9 X 3-4um.
associated with Pinus in the Kaingaroa Forest.

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Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)
Suillus piperatus (Bull.) Kuntze 1898
Suillus piperatus (Bull.) Kuntze (1898)

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Suillus piperatus (Bull.) Kuntze 1898
New Zealand
Suillus piperatus (Bull.) Kuntze 1898
New Zealand
Auckland
Suillus piperatus (Bull.) Kuntze 1898
New Zealand
Bay of Plenty
Suillus piperatus (Bull.) Kuntze 1898
New Zealand
Nelson
Suillus piperatus (Bull.) Kuntze 1898
New Zealand
North Canterbury
Suillus piperatus (Bull.) Kuntze 1898
New Zealand
Taupo

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1cb1a654-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
3 July 2001
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