Observation 93016: Cortinarius absarokensis M.M. Moser & McKnight
When: 2010-07-10
Herbarium specimen reported

Proposed Names

-30% (2)
Recognized by sight
Used references
Based on microscopic features
53% (3)
Eye3 Eyes3
This paper includes Boudier’s picture of alpinus :-)

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C. absarokensis looks like a perfect match!
By: Andreas Gminder (mollisia)
2012-04-21 18:22:28 EEST (+0300)

Irene, thank you for the link to the paper of PEINTNER. I had it as separatum somewhere but couldn’t remember. Indeed it looks very much like this is C. absarokensis, which has b.t.w. yet been found in Austria.

@Debbie: I posted the spore measurement below as being appr. 13-16 µm in length. Somewhere my notices about the width and the Q-value must be ….
Other microscopical details are probably of no relevance for the determination in this case.

great photo of an impressive cort!
By: Debbie Viess (amanitarita)
2012-04-21 17:37:54 EEST (+0300)

I look forward to hearing about its microscopy.

I’m too curious
By: Irene Andersson (irenea)
2012-04-21 13:39:41 EEST (+0300)

about these species to leave them yet :-)

I found Boudier’s original description from 1895 in us.archive.org. They have an OCR scanning without corrected spelling, and no pictures are included:

I. Cortinarius (Myxacium) alpinus Boud., n. sp., Pl.II fig. I.

Curtus, 3 c.m.circiter altus et totidem latus, sat robustus ; pileo
fulvo-lutescente, pediculo albo ad apicem sulcato.

Pileus subcarnosus, convexo-campanulatus , firmus^ viscidus,
fulvo-aureus ad marginem pallidior ; stipes curtus, validas^ albus,
ad basim subaltenuatam ochraceus sed glutine albido infrà corti-
nam subannulatam tectus,suprà endeiUer sulcatus, inlùs dein cavus.
Lamell» latae, adnais, primo pallidse, dein laelè cinnamoaiede,acie
pallidiore. Sporse majuscula, oblongo-fusiformes, ferruginese sub
lente compositâ aurese, hilo bene conspicuo, intus nebuloso-guttu-
latae, extus lœves, 16-20 × 7-9.

In pratis alpinis humidiusculis, 2200 usque ad 3100 m. altitudine;
satis frequens. Grand St* Bernard, Lac noir, Gornergrat^ Simplon.

Cette jolie espèce, qui parait franchement alpine^ a l’aspect d’un
petit C. collinitus mais «lie s’en distingue bien par son chapeau
moins plan, plus convexe, moins visqueux, d’un roux doré sans
teinte olivâtre ou livide, par son pied toujours blanc au sommet qui
est très visiblement sillon né-cannelé au-dessus de la cortine ; par
son voile glutineux blanc formant souvent anneau et recouvrant
presque sans rupture la base du pédicule qui est fibrilleuse et
ochracée ; puis par ses spores.

Elle est plus voisine de C lividoochraceus Berk. mais elle est de
taille plus courte, ses spores sont plus grandes et de forme autre ;
son chapeau n’a rien de livide et son pied n’est jamais violacé au
sommet comme l’indique cet auteur (vide Cooke, Handb. of Brit.
FuDgi 1, p. 178). Elle se distingue encore de toutes deux par sa
chair d’un fauve pâle et son habitat parmi le gazon des prairies

At least it’s good to know that both Moser and www.britmycolsoc.org.uk are following Boudier’s original description – but apparently, none of them have actually seen it! Kibby et al express doubts about a species with such large spores…

I’ll be adding an old and blurry picture of what we used to call alpinus, but I’ll choose to name it favrei from now on.

By: Andreas Gminder (mollisia)
2012-04-21 11:04:00 EEST (+0300)

for the effort you made, Irene! I just checked, why I came to this determination in that time, and it is quite clear, that I used Funga Nordica. There you have no other choice, because the first species they rule out is C. alpinus/C. favrei by the habitat: Growing under dwarf Salix. In my location there was only dwarf Salix and nothing else. No Betula nana and of course no other trees (no Pinus mugo, no Picea of course). The only other plant I can’t exclude would be Dryas and Polygonatum viviparum, both occuring in this area here and there.
I agree, that it might be someting not yet know, especially as this area where I collected is in a part of the Eastern Alps, in which quite a lot of endemic flowering plants occure. So why not also some special fungi?

I will search for the exsiccate, which is not too easy as I have not labelled yet my specimens from the last two years at least ….

thanky again,

I have tried
By: Irene Andersson (irenea)
2012-04-21 10:44:25 EEST (+0300)
to find the original description of C. alpinus, since C. favrei according to Funga Nordica and CFP is said to be a synonym.

Parts of Boudier’s first description of alpinus from 1894 looks like this:

“Espèce paraissant franchement alpine, voisine de C. collinitus, mais s’en distinguant bien par se taille très courte quoique robuste, par son pied blanchàtre jamais violacé, assez fortement sillonné-cannelé entre la cortine et le chapeau. Elle est plus voisine ce C. lividoochraceus, mais elle est de taille plus courte, et son pied n’est pas violacé au sommet comme l’indique cet auteur. la chair est d’un fauve pàle plus foncé à la bas du stipe, qui est d’un fauve ochracé à la partie inférieure mais recouvert d’un voile glutineux blanchàtre. Il parait assez répandu.”

If it looks like lividoochraceus, it can probably have a rather pale ochraceous cap, but the main character should be that the stem has a striate upper part and maybe also a rooting base?
This first description doesn’t include any micro characters. In ”Bulletin trimestriel de la Société mycologique de France” 1895, Boudier also published an icon (and maybe a more detailed description?), but I can’t find it. He usually made very good descriptions and pictures of his species..

If I’m not mistaken, the synonymy between alpinus and favrei isn’t quite true, it just concerns the widely spread interpretation of alpinus:

Cortinarius alpinus sensu auct (including Favre) → Cortinarius favrei
Cortinarius alpinus sensu Boudier → Cortinarius alpinus

This has been noticed both by Moser and these guys:

I agree that your obs could be a pale – and larger – variety of favrei, but I also believe that there are more species/forms that are still unknown in this Myxacium group.

I think neither
By: Irene Andersson (irenea)
2012-04-20 22:38:58 EEST (+0300)

alpinus nor favrei..

I’ll share more thoughts tomorrow..

Have to say that I just love this first picture!

Cortinarius favrei or C. alpinus?
By: Andreas Gminder (mollisia)
2012-04-20 20:11:41 EEST (+0300)

C. favrei is may be not the best name for this, as there is also C. alpinus. Some (BRANDRUD et al. e.g.) take them for synonyms. C. alpinus should be not as dark as C. favrei and occuring on calcareous soil. The spores shall be 15-20 µm, whereas C. favrei should have 10-15 µm. My collection had 13-16 µm …..
As it was on calcareous soil, it might be C. alpinus (if this is a good species). What concerns the colour, so there is a f. pallidus of C. favrei, which is even paler then may collection. The real size of the fruitbodies was not more then 5 or 6 cm for the bigger one, may be it looks bigger on the foto.

So except the soil being calcareous, I have no real character that speaks against C. favrei. The spores are a little bit at the bigger end, but for C. alpinus they would be at the lower end ….

In my books
By: Irene Andersson (irenea)
2012-04-20 14:37:14 EEST (+0300)

favrei is a very small Myxacium, with a dark brown cap. This looks quite different.

Created: 2012-04-20 09:55:16 EEST (+0300)
Last modified: 2012-04-21 18:29:28 EEST (+0300)
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