To facilitate phylogenetic discussion, Nguyen et al.1 divide Suillus into three groups:
- Spectabilis group, listed in MO as Suillus spectabilis group sensu Nguyen et al.;
- Granulatus group, listed in MO as Suillus granulatus group sensu Nguyen et al.;
- Tomentosus group, listed in MO as Suillus tomentosus group sensu Nguyen et al.;
1 Nhu H. Nguyen, Else C. Vellinga, Thomas D. Bruns & Peter G. Kennedy (2016). Phylogenetic assessment of global Suillus ITS sequences supports morphologically defined species and reveals synonymous and undescribed taxa, Mycologia 108:6, 1216-1228 (also available via ResearchGate)
Bolete with viscid cap and/or partial veil and/or glandular dots on stem; olive- to dark-brown spore print. Almost all Sullus species are Pinaceae associates.
Cap can be dry to strongly viscid, smooth to strongly fibrillose or scaly.
Partial veil can: sometimes leave an annulus on the stem; be cottony, viscid, or elastic-membranous; sometimes leave tissue at cap margin and thus appendiculate.
Pores often appear somewhat radially elongated/radially arranged, mouths often slightly angular or irregular in appearance.
Stipe with or without small, slimy glandular dots.
We don’t have a single Suillus posting on Mushroom Observer. Unbelievable.
Oluna asks me, “Where did they get lost?” Adolf