Observation 46906: Cortinarius subgenus Dermocybe (Fr.) Fr.

When: 2010-06-15

Collection location: Kaipara harbour, Auckland, New Zealand [Click for map]

Who: Michael W (Michael Wallace)

No specimen available



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Could be dry specimens
By: Karl Soop (karlsoop)
2011-01-16 07:38:46 PST (-0800)

If it is the same as the other finding, yes then it is most probably C. alienatus. The other one shows clearly a viscid, even glutinous, yellow veil on the stipe, which in the present finding probably had dried up. — And yes, Mike, C. leptospermarum is a dark species, and quite small too. C. alienatus can easily be 60-90 mm large (cap diam.), I would guess yours were 40-50 mm or so?

By: Michael W (Michael Wallace)
2011-01-15 18:37:34 PST (-0800)

To me this seems to be a good match for Horak’s written description of C. leptospermarum but the images at the Landcareresearch site show specimens that are much darker in colour, here is a link to the description and images.

Hi Karl,
By: Michael W (Michael Wallace)
2011-01-15 12:44:34 PST (-0800)

This is the same species as the one in the observation linked to below that you suggested was C. alienatus, it was collected from the exact same location, I have observed it there for the last 5 years.

This fungus has a pale yellow stipe and a viscid cap and stipe, I’m sure it is a Dermocybe as it does have a strong red alkaline reaction and is hygrophanous, I have tried to key it out again with your key but it doesn’t seem to be a match to any of the species mentioned, I’ll have to look at it again this season.

By: Karl Soop (karlsoop)
2011-01-15 08:52:10 PST (-0800)

Both of the suggested taxa, C. chrysma and C. alienatus, have yellow stipes, and I have problem associating either with this fungus. If it reacts strongly red with alkaline solutions, it could be another Dermocybe, perhaps C. olivaceoniger; this is a glutinous fungus, however.

Created: 2010-06-14 22:05:44 PDT (-0700)
Last modified: 2011-01-15 13:56:47 PST (-0800)
Viewed: 94 times, last viewed: 2017-06-07 17:15:36 PDT (-0700)
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