Suillus Adans.
A number of species are known in Europe. Fruitbody boletoid without or with partial veil, and then leaving a ring on the stipe. Cap in most species more or less viscid. Stipe solid.
Suillus mediterraneensis (Jaquetan & Blum) Redeuilh
Description
Cap up to 10 cm, at first hemispherical then expanding to convex, at first yellowish, soon yellowish ochraceous to brownish or orange brown. Stipe, cylindrical, often tapering below, more or less yellowish, without ring, covered with numerous large brownish glandular dots. Flesh yellowish. Tubes pale yellow to olivaceous yellow. Pores fine, rounded, pale yellow to olivaceous yellow. Smell not distinctive. Taste not distinctive. Spores 9–11 ? 3.5–4 ?m.
Habitat. Coniferous forests, mycorrhizal with two-needled pines (Pinus halepensis, P. pinea, P. pinaster).
Distribution. In Europe as so far known restricted to the Mediterranean area.
Similarity. Apparently similar to Suillus granulatus and distinguished on the account of the yellowish (and not white) flesh.
Photographs

Typical collection of Suillus mediterraneensis. (photo G. Eyssartier)
Important literature
Engel, H., Dermek, A., Klofac, W., Ludwig, E. & Br?ckner, T. 1996. Schmier – und Filzr?hrlinge s. l. in Europa. Die Gattungen Boletellus, Boletinus, Phylloporus, Suillus, Xerocomus. Verlag Heinz Engel, Weidhausen b. Coburg.
Estad?s, A. & Lannoy, G. 2004. Les bolets europ?ens. – Bulletin Mycologique et Botanique Dauphin?-Savoie 44(3): 3–79.
Galli, R. 1998. I Boleti. Atlante pratico-monographico per la determinazione dei boleti. Edinatura, Milano.
Lannoy, G. & Estad?s, A. 2001. Les Bolets. Flore mycologique d’Europe. Documents Mycologiques M?moire Hors s?rie no. 6. Pp. 1–163. Association d’?cologie et de Mycologie, Lille.
Mu?oz, J.A. 2005. Boletus s. l. – In: Fungi Europaei. Vol. 1. Pp. 1–951. Edizioni Candusso, Alassio.
Simonini, G. 1998. Qualche specie rara o poco conosciuta della famiglia Boletaceae. – In: Fungi non delineati. Vol. 6. Pp. 1–56. Libreria Mykoflora, Alassio.
?utara, J., Mik??k, M. & Janda, V. 2009. H?ibovit? houby. ?eled’ Boletaceae a rody Gyrodon, Gyroporus, Boletinus a Suillus. Academia, Praha.