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Cortinarius atrolazulinus - Photo (c) Peter de Lange, all rights reserved
cooperj's ID: Cortinarius atrolazulinus, a member of Webcaps (Genus Cortinarius)
Posted by cooperj about 2 years ago (Flag)
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Recent work by Emma Harrower is the US has cast some light on the purple NZ cortinarius species. The last image is my current ITS tree generated from published and unpublished sequences. This collection is in the tree as JAC10989. NZ material falls into two distinct groups. In fact it shows the usual pattern for ECM fungi in NZ of one group with beech and another closely related group with tea-tree. The correct name for the beech associated purple cort is C. atrolazulinus, but has been called various things as you can see from the tree. The tree contains another group labelled Cortinarius sp. Au1 which is present in both Australia and NZ with myrtaceous hosts. The NZ collections are Clive Shirley's material with tea-tree. This species does not have a name yet. I'm not sure if Emma intends to publish it.

It is very (and I mean very) unlikely that C. subcalyptrosporus and C. atroviolaceous both described from Mt Kinabalu, figure on this tree or occur in New Zealand.

This purple group of Cortinarius is important as it contains the type species of Cortinarius (subgenus Cortinarius), the most speciose genus of agarics.

Posted by cooperj about 2 years ago (Flag)
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Actually I just noticed that Karl Soop has two other collections identified as C. atrolazulinus (PDD103879, PDD97542) with sequences that come out nowhere near this group of core Cortinarius. Somebody needs to compare those with the type of C. atrolazulinus.

Posted by cooperj about 2 years ago (Flag)
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Cortinarius atrolazulinus - Photo (c) Peter de Lange, all rights reserved
pjd1's ID: Cortinarius atrolazulinus, a member of Webcaps (Genus Cortinarius)
Posted by pjd1 over 1 year ago (Flag)
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cooperj's ID: Cortinarius carneipallidus, a member of Webcaps (Genus Cortinarius)

Emma's work since published ...
http://mycokeys.pensoft.net/articles.php?id=5409
I was nearly right. It turns out this is not C. atrolazulinus, which isn't in the same cortinarius groups treated by Emma. The specimen in this record became the holotype of a newly described species, with beech. The tea-tree species already has a name from Australia and is Cortinarius kioloensis. C. subcalyptrosporus and C. atroviolaceous are not in NZ.

Posted by cooperj over 1 year ago (Flag)
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Do I have this right then under
Under beech = C. atrolazulinus
Under Tea-tree = C. kioloensis
Under Tea-tree and a Pileus that's fibrillose = Cortinarius sp. (unnamed)
http://hiddenforest.co.nz/fungi/family/cortinariaceae/corti36.htm

Posted by myxonz over 1 year ago (Flag)
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Under beech:
C. carneipallidus (spores 10.5–12 × 8–8.5, Q less than 1.6)
C. atrolazulinus (9–12.5 × 5.5–6.5, Q greater than 1.7)

Under tea-tree:
C. kioloensis (11.5–12.5 × 7.5–8)
C. atroviolaceous cf. (7.5-8.5 x 4-5)

The last one is yours and needs more material/sequences to name.

carneipallidus and kioloensis are a closely related species-pair with the latter occurring both sides of the Tasman with myrtaceous hosts and the former just on this side of the Tasman with beech. We have quite a few of these pairs. Dispersal/host jump/evolution, not necessarily in that order.

Posted by cooperj over 1 year ago (Flag)
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cooperj's ID: Cortinarius carneipallidus, a member of Webcaps (Genus Cortinarius)
Cortinarius atrolazulinus - Photo (c) Peter de Lange, all rights reserved
pjd1's ID: Cortinarius atrolazulinus, a member of Webcaps (Genus Cortinarius)
cooperj has chosen to retain control over the taxa associated with their observations
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