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Old 07-11-2009, 10:22 PM
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mollisia mollisia is offline
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Location: Jena - Germany
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Re: Lactarius quieticolor?

Hello,

the initial fungus definitely is not L. deterrimus. This speices is the only one of the Dapetes which has no spots on the stipe. All others have.

Those orange milking Lactarius are not really difficult to separate - with a few exceptions:

Lactarius salmonicolor is the one that grows with Abies. And it is the only one which never shows green discolorations of any kind. neither cap nor milk.

Lactarius deterrimus is the one from Picea. It has never any spots on the stipe. The milk turns vinaceous after appr. 15 minutes.
(there is a scandinavien species, L. fennoscandicus, which is very similar)

All other species are with Pinus:
Lactarius sanguifluus is easily recognized because he is the only one which has wine red milk from the beginning. It grows on calcareous soil in warm areas.

Lactarius deliciosus is the one that never ever turns darker in the milk, but becomes green after several hours.

Lactarius semisanguifluus is a small species, even smaller as L. deterrimus, and has the fastest colour change in the milk: 5-10 minutes. It has very dull colours, often brownish with a vinaceous hue and mixed with green. Nearly no ornage colours in the cap.

Lactarius queticolor is a more robust and bigger species, which also turns vinaceous in the milk (difference to deliciosus!), but a littler more slowly than L. semisanguifluus). It has the same shiny concentric zones on the cap as deliciosus, but different cap colour. The zones on the cap distinguish it from L. semisanguifluus, which is otherwise very similar. These two species are best to separate with the microscope, they have quite different spores.
L. quieticolor seems to be restricted to acid soil, but L. semisanguifluus to calcareous. But I'm not totally sure about that.

I'm lucky enough to have excursion areas where we can find 4 or 5 or even all 6 during one excursion, so I see those quite often. L. semisanguifluus and L. quieticolor seem (in my area at least) to be the rarest.

So, the initial picture shows in my eyes L. quieticolor.

best regards,
Andreas

best regards,
Andreas
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