Observation 224503: Russulaceae Lotsy

When: 2015-07-24

Collection location: Parque Nacional Viruá and Caracaraí, Roraima, Brazil [Click for map]

Who: Susanne Sourell (suse)

No specimen available

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By: Danny Newman (myxomop)
2015-12-11 02:27:58 GMT (+0000)

that Russulaceae takes on strange forms in the tropics. See:


It also takes on plenty of forms more typical for what we see in the temperate world. That said, I would only consider calling this a Russula with microscopy or a convincing combination of some of those temperate Russula characters, and would only consider calling it a Lactarius with evidence of exuded latex.

Do you have a photo of the context?

Neotropical Russulaceae
By: Susanne Sourell (suse)
2015-12-08 22:35:18 GMT (+0000)

One of the fruitbodies was broken at the edge and showed the typical sphaerocyst cell structure, best described with ‘breaking without fibres’. That is why I think it is in the Russulaceae. Due to the very wet weather it was impossible to say if there was some white watery latex exuded or if it was just water. To my knowledge intervenose gills seem to occur with Russula and Co. in the Neotropics.

Does not look like Russulaceae
By: Alan Rockefeller (Alan Rockefeller)
2015-12-08 07:25:48 GMT (+0000)

due to the intervenose gills in pic # 4.

Without spores
By: Danny Newman (myxomop)
2015-12-08 07:04:35 GMT (+0000)

this seems like an ambitious ID, particularly in a part of the world where Russulaceae are so rare.