When: 2019-06-17

Collection location: Greensburg, Louisiana, USA [Click for map]

Who: Logan Wiedenfeld (LoganW)

Specimen available
Collection number: Logan Wiedenfeld 250

Growing in pine predominant mixed woods, under longleaf pine. Shallow tubes that bruise blue quickly. Context does not blue or blues weakly and sporadically where the tube layer meets the cap. Context is yellow generally and appears brighter in the stipe. More mature mushrooms have a golden yellow pore surface, almost orangish.

Spores are long and narrow, roughly averaging 11 × 4.



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Add Comment
By: I. G. Safonov (IGSafonov)
2019-06-18 08:16:44 +03 (+0300)

Sometimes the actual tree host is not obvious, growing farther out than the trees in the immediate vicinity of the fungi. Once I found a suillus surrounded only by hardwoods; mature pines were “hiding” at a distance of 1.5 trunk lengths away.
Yep, 222574 is a good candidate for bicolor. I think it’s not unusual for yellow-pored boletes to have their pores darken or sometime even turn orange in age or due to the weather perhaps (e.g., obs 76870 and obs 280028).

By: Logan Wiedenfeld (LoganW)
2019-06-18 07:40:46 +03 (+0300)

A pair of young water oaks were nearby, but there were probably a half dozen pines closer. I found another collection (I’ll post in a bit) of what is likely the same species under oaks (though in that case, pines were close too). These are almost certainly the same as obs 222574, a collection made in a very similar pine predominant habitat.

I’m not used to seeing bicolors. Is it common for mature fruiting bodies to have that vaguely orange cast to the pore surface?

Was oak present nearby?
By: I. G. Safonov (IGSafonov)
2019-06-18 07:31:26 +03 (+0300)

These look like bicolor; at the very least they are in the “group”, in the strict sense, if that is still a consideration. Pine seems like an unusual host for the species, though I’ve found bicolor in oak-pine woods of the NJ Pine Barrens.
This Gulf Coast collection is interesting and merits a closer look.