Observation 129254: Lactarius quieticolor Romagn.

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By: Gerhard Koller (Gerhard)
2013-03-07 05:12:50 WIB (+0700)

did some work. You’re right. It is quieticolor and not far from that locality it has been found by others too.
Thanks for this conversation!

By: Gerhard Koller (Gerhard)
2013-02-22 23:33:57 WIB (+0700)

I will be interested in that matter. Lactarius is a rather easy genus but there are also some tricky “borderline species” ;)

By: Irene Andersson (irenea)
2013-02-22 23:22:11 WIB (+0700)

I never liked the idea of making hemicyaneus a synonym of quieticolor like it is in all my books and IndexFungorum too. But not according to MycoBank(!)
After all, they were both described by Romagnesi. I’ll see if I can find out how they were meant to differ in his descriptions.

Color change
By: Gerhard Koller (Gerhard)
2013-02-22 22:46:43 WIB (+0700)

is like in semisanguifluus, but didn’t scope them (my colleague on this trip is a mycophagist so they got annected). But they fruit every late fall on the same spot. I will look this year.
Hm, we do not have fennoscandicus. No green turning milk, they all turn violet, red and the like. Could this be a discrepancy in species concept once again?
Or is it possible that L. hemicyaneus does occur in Central Europe despite literature? I am not familiar with it. On my trips to Southern Europe I hadn’t had the luck of finding this species up to now, maybe this year when I will be near Marseille in November.

I have seen 3 species
By: Irene Andersson (irenea)
2013-02-22 22:00:11 WIB (+0700)

showing blue context below the cap cuticle: semisanguifluus, quieticolor and our northern(?) fennoscandicus. The only one of those that I find in swampy areas, with spruce, is fennoscandicus. It has slightly smaller spores than the others, milk is orange and turning greenish, not vinaceous.
The other two grow with pine in dryer habitats. Is it possible that you have fennoscandicus in your area too, or maybe there are more species involved that aren’t described..?

Have you checked the colour change of the latex – how long it takes?
L. semisanguifluus vinaceous in 5-8 minutes, quieticolor dark red in 15-20 minutes.
L. quieticolor should also have thicker ridges on the spores (something i find difficult to compare in my microscope)

I know what you mean.
By: Gerhard Koller (Gerhard)
2013-02-22 21:24:26 WIB (+0700)

I am not sure about that at all. Lactarius semisanguifluus is, despite few data in many countries, a common species, especially in the black pine stands in Eastern Austria. Here there are no black pines but red pines and spruces. But that’s not the matter. My understanding of L. quieticolor is the blue zone between cap context and cap cuticle, hence also a proposed synonymy with L. hemicyaneus which is a southern distributed species. All my finds of L. quieticolor are from peat bogs and their margins in very wet coniferous woods and the like, especially common in Southern Bohemia. Here we have a wind-exposed but grassy and somewhat shady habitat. Ok, it fruits in late fall only. By searching my data base I found one find in the neighboring mountains where the surroundings are similar. So maybe you are right. I am just hesitating because of the summer warm, winter dry habitat of this. But then again there are a great lot of Cortinarii and Lactarii known from such habitats as in the Waldviertel and Bohemia but not the really humid loving ones as far as I would say.
Or do you mean L. quieticolor and L. semisanguifluus are the same?

Created: 2013-02-22 19:15:40 WIB (+0700)
Last modified: 2013-03-07 05:11:58 WIB (+0700)
Viewed: 84 times, last viewed: 2017-12-12 12:25:35 WIB (+0700)
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