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Friday, 10 October 2014

Suillus grevillei and S viscidus with Larch

 Suillus grevillei

 This very common bolete is associated with Larch so has been called the 'Larch Bolete'.  A slug enjoying the viscid-glutinous surface.

The pores are large and there is a distinct ring just below the dull yellow tubes.

This was found at the forestry walk at Keepers, Brechfa forest at the end of September.
Suillus viscidus

This is a less common species but is also associated with Larch. It also has a viscid-glutinous cap surface and given the common name 'Sticky Bolete'.  In fact the common names could apply to either of these species!

This species has an overall grey colour with medium sized pores.  The ring soon collases and darkens.  

I was surprised to see this in Pembrey forest as this is planted with Corsican Pine Pinus nigra var maritima and did not, at first, see any Larch as this was hidden by a Holm Oak with dense foliage, pines and bramble.  The tree must have been 10 to 15 m from the fungi showing how far mycorrhizal fungi can be from their symbiotic host.


  1. Am I write to think that a good way to recognise Suillus is to note the scaly stipe beneath the bolete like pores?

    1. Yes Bruce some have a ring but in others the ring is replaced by speckle-dark-dots at the top of the stipe. A wonerful series of books written by Geoffrey Kibby ---- one on Boletes (Boletus/Suillus/Leccinum etc) in British Isles. I will bring to show you Sunday. A new one, Lactarius just published but not got this yet.