Observation 22112: Hysterangium Vittad.

When: 2009-06-10

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

Who: Michael W (Michael Wallace)

Specimen available

Found half buried in leaf litter under Cyathea dealbata and Cordyline australis in native New Zealand bush.

Species Lists


Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Copyright © 2009 Michael
Spores, scale divisions = 2.5 microns.

Proposed Names

8% (4)
Based on microscopic features: Spore shape, size and ornamentation. Two and four spored basidia with larger spores from the two spored basidia.
44% (2)
Recognized by sight
Based on microscopic features: Hysterangium like spores

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
looks like Gautieira novae-zealandiae
By: Michael Castellano (trufflercaz)
2009-07-07 12:02:43 CDT (-0400)

These specimens look like a good match for G. novae-zealandiae. Unfortunately it is not a Gautieria nor probably a Chamonixia. This genera are under reconstruction using molecular tools and so far we have found that Gautieira from the Northern Hemisphere is probably different from those in the Southern Hemisphere, two different but related clades. Chamonixia is even more of a mess at this time and Teresa lebel and students are working on it. Best we can do at this moment is leave it as G. novae-nealandiae until the groups are better sorted out.

By: Michael W (Michael Wallace)
2009-06-14 06:11:12 CDT (-0400)

Although I don’t think it is Hysterangium neotunicatum which has 6 spored basidia, this only had 2 and 4 spored basidia!

Key to some Hysterangium species
By: Irene Andersson (irenea)
2009-06-14 05:07:33 CDT (-0400)

and a few others, can be downloaded here:
I’d take a closer look at Hysterangium neotunicatum..

By: Michael W (Michael Wallace)
2009-06-13 23:19:33 CDT (-0400)

I tried to make a link when I made this observation but it wouldn’t work, there are spore images and a description, the fruit body can be whitish to ochraceous and stains a blue green colour with age not with damage, this can be seen on the left side of my third image and to me the spores are a match in size, shape, colour and the ridges can be seen in my image.
Two previous synonyms are Gautieria novae-zelandiae and before that Hysterangium sclerodermum

I guess it won’t let me make a link, if you are interested just google, landcareresearch Chamonixia pachydermis images.

By: Clive Shirley (myxo)
2009-06-13 19:45:48 CDT (-0400)

Another genus to look at is Gallacea maybe G. eburnea Or contact Ross Beever our local truffle expert :)

By: Irene Andersson (irenea)
2009-06-13 17:56:16 CDT (-0400)

Should have noticed that – and the different structure inside, and the point where the columella starts.. it just shows how little I know about truffles.
Well, anyway, I agree that it’s not Chamonixia.

By: Andreas Gminder (mollisia)
2009-06-13 17:42:59 CDT (-0400)

No rhizopgon, because this genus never has a gelatinous columella.

By: Irene Andersson (irenea)
2009-06-13 17:31:28 CDT (-0400)

The spores and fruitbodies remind of Rhizopogon. Maybe there are other options, but I don’t know truffles that well..

not a Chamonixia
By: Andreas Gminder (mollisia)
2009-06-13 17:09:22 CDT (-0400)

if this species is correctly determined it needs to be transferred into another genus. That species you show is with certainty no member of the genus Chamonixia. Chamonixia has brown spores with ridges, the fruitbodies are white to greyishwhite and turn bright blue when touched. I would tentatively suggest the genus Hysterangium for this one you show.
Please not: I have no knowledge whether the species is correctly determined. But seeing the pictures I know for sure that this is no Chamonixia.

By: Clive Shirley (myxo)
2009-06-13 15:18:14 CDT (-0400)

Chamonixia pachydermis to me is a white fungus which ware exposed to light has blue/green coloring and found under beech. Are you sure on this ID?

Created: 2009-06-12 21:58:45 CDT (-0400)
Last modified: 2016-04-28 19:27:25 CDT (-0400)
Viewed: 158 times, last viewed: 2018-03-05 09:54:27 CST (-0500)
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