Observation 82683: Ossicaulis lachnopus (Fr.) Contu

When: 2011-11-12

Collection location: Zona da Estrada das Águas Livres, Amadora, Portugal [Click for map]

Who: zaca

No specimen available

I found two species of the genus Ossicaulis very similar to my specimens: O. lachnopus and O. lignatilis.

Photos and microscopy of O. lachnopus can be found in Ref.1. The values for the spores dimensions presented there are: 2.8-3.6 × 2.0-2.6 µm. According to the author this species can be confused with O. lignatilis, the latter having more decurrent gills and bigger spores (see Ref.2). Photos and microscopic data of O. lignatilis can be seen in Ref.3, where for the spores the following dimensions are referred: 4-5.5 × 3-4 µm.

Precise values for the dimensions of the spores are beyond the possibilities of my scope, but I get result for average length less then 4.0 µm. In the photo of spores attached the biggest one has 4.3 µm in lenght. In addition, from the photos it is possible to see that the gills are not decurrent. So I believe that this is O. lachnopus.


Microscopy: Spores.
Microscopy: Gill.
Microscopy: Cuticle.
Dried specimen.
Dried specimen.

Proposed Names

48% (2)
Eye3 Eyes3
Used references: Ref.1:picasaweb; Ref.2: mycodb (comment in a forum); Ref.3: bioimages.
Based on microscopic features

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Nothing to apologize for.
By: zaca
2011-11-16 18:52:54 EST (-0500)

I understood you correctly. My comment was just to emphasize that they are not so hard when dried and are not Clitocybe. So they must be something else, like the species that I proposed.

By: Christian (Christian Schwarz)
2011-11-16 18:45:26 EST (-0500)

I meant the ones I found, not the ones in this observation.

I don’t think that
By: zaca
2011-11-16 18:41:01 EST (-0500)

my specimens are Clitocybe and I don’t find them so hard as you mentioned in your comment. I upload a pair of photos just taken of a dried specimen.

But the texture…
By: Christian (Christian Schwarz)
2011-11-16 18:24:39 EST (-0500)

Seems wrong. Ossicalis is supposed to be ‘hard as a bone’ when dry, and a pleurotus-like gestalt.
The ones I found seemed more like fairly typical fleshy clitocyboids, and they were growing on (woody) Echium litter in an urban environment, but not wood sensu stricto.

Also notice the
By: zaca
2011-11-16 18:16:14 EST (-0500)

clamp connection, that is in my photos as well.

Yes Christian,
By: zaca
2011-11-16 18:09:44 EST (-0500)

they look very similar. Particularly, the young specimens in your photos are like copies of mines. According to the measures for the spores that you present, it’s maybe O. lignatilis.

By: Christian (Christian Schwarz)
2011-11-16 17:54:28 EST (-0500)

Could this be the mystery mushroom (or something very much like it?) from the infamous
observation 64232?

That would make my day!

Created: 2011-11-16 17:35:27 EST (-0500)
Last modified: 2017-09-18 20:36:04 EDT (-0400)
Viewed: 353 times, last viewed: 2018-08-07 07:40:34 EDT (-0400)
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