Observation 45328: Ripartites P. Karst.

When: 2010-05-10

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

Who: Michael W (Michael Wallace)

No specimen available


Proposed Names

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By: Irene Andersson (irenea)
2010-05-13 04:22:34 CDT (-0400)

I have been trying to find out how the different names around Ripartites tricholoma should be interpreted, and even if there are herbarium collections with different names, the ones who did the determinations can’t tell for sure that they are really different species. Just that the collections differ a bit in shape and hairyness. As far as I know, no DNA tests have been made on any “helomorphus” collections.

For the time being, R. metrodii and R. helomorphus are treated as forms of R. tricholoma.

This obs reminded me that I should change the name on mine. I’ll add more info there..

Hi Douglas,
By: Michael W (Michael Wallace)
2010-05-12 18:45:08 CDT (-0400)

Yes, I checked everything before proposing this name.

The spores in mass are pale brown and are subglobose and echinulate, on average they measure 5×4µm.
I don’t have any images of the lamellae attachment but they are subdecurrent and can just be seen if you look at the full sized image.

The known species from NZ is R. helomorphus(as it’s known at the landcare site) but after reading Irene’s words on that species I don’t think it’s that one due to the small size of these specimens, the pileus was at the most 20mm in diameter and the fruit bodies were no taller than 45mm.

This is the first time I’ve seen this mushroom so I wouldn’t say it’s common, R. tricholoma is not known from NZ but I do think this is closer to that species than it is to R. helomorpha, there’s always a chance that it could turn out to be a unique species, especially being in NZ.

Any more details on how you go to this?
By: Douglas Smith (douglas)
2010-05-12 08:05:04 CDT (-0400)

Do you have any more details on how you got to this id? Did you check the spore color here? Do you have any shots of the gills, to see the gill attachment? Is this a fairly common species in New Zealand?

Created: 2010-05-12 06:18:55 CDT (-0400)
Last modified: 2010-05-12 06:20:10 CDT (-0400)
Viewed: 73 times, last viewed: 2019-02-03 07:28:51 CST (-0500)
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