Observation 296966: Lanmaoa G. Wu et al.

When: 2017-11-03

Collection location: Baton Rouge, Louisiana, USA [Click for map]

Who: Logan Wiedenfeld (LoganW)

No specimen available

Growing solo under a live oak in a suburban lawn. A good quarter of the slightly tapering stipe was buried, and the fab was very dense. The yellow pore surface readily stains blue and the after a few minutes brown. The context hardly stains – a bit at the base of the stipe. The odor is strongly of beef bouillon.



Proposed Names

28% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
By: I. G. Safonov (IGSafonov)
2017-11-04 12:54:13 CDT (-0400)

You posed an interesting question in light of the additional data I have recently received for my two collections of Boletus pallidoroseus. If my ID is correct, and I have no reasons to believe it’s not, pallidoroseus definitely falls into Lanmaoa as per both nrLSU and TEF-1 sequences (to be discussed later). Also, see my obs 280056 that is likely Lanmaoa or close to it, as per both its gross morphology (a lookalike of L. pseudosensibilis) and TEF-1 sequence.
When I proposed Lanmaoa for this observation (296966), I wasn’t thinking about it being similar to pallidoroseus on account of the bluing action and the characteristic odor. Instead I was guided by the morpho gestalt. I agree that 296966 appears to be different from your “other Lanmaoa critters”, obs 294542 and obs 295396, but the pictorial evidence is obviously not enough for a more firm conclusion.

By: Logan Wiedenfeld (LoganW)
2017-11-04 12:09:10 CDT (-0400)

you think it’s possible that this taxon is related to B. pallidoroseus? There seem to be several overlapping features: the bouillon smell, the blue that turns to brown, the sporadic contextual bruising.

Also, I’m not convinced that this is the same taxon as the other Lanmaoa critters I’ve found. The cap seems darker and the gestalt seems off: it’s taller and denser, with a stipe that reaches deep within the soil. I suppose it could just be an anomalous fb.

ID possibility
By: I. G. Safonov (IGSafonov)
2017-11-04 01:35:11 CDT (-0400)

This looks kinda similar to the European Lanmaoa fragrans, but I doubt the two are conspecific.