Observation 129916: Dasyscyphella nivea (R. Hedw.) Raitv.
When: 2013-03-02

Notes: Growing on a rotting stump.

Spores 5-8 × 1.5-2 microns. Ascus 45 × 4 microns.

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Swiss Fungi, vol. 1

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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lousy microscopy
By: Sava Krstic (sava)
2013-03-07 08:01:13 GMT (+0000)

Douglas,

It was a late night frustrating microscopy and I quit before getting the necessary info for a confident ID. Sorry. One day I may come back to it.

The nivea seemed a more likely ID than virgineus because of the habitat, so I gave it a “Could Be”.

As for the differences between the genera you mention, I am quite ignorant. Apparently, Dasyscyphus has been synonymized with Lachnum (so Dasyscyphus virgineus is Lachnum virgineum). Today I found a paper by Ain Raitviir on Dasyscyphella (http://www.ib-pan.krakow.pl/...) and he says that “It comprises
species having characteristic hairs which are thinwalled and warted as in Lachnum Retz., but possess 1 or 2 smooth glandular cells apically.”

Even if what I found is a Dasyscyphella, it’s not necessarily nivea; there are quite a few species described in Raitviir’s paper.

Thanks for your inquiry; I learned a little trying to answer your question.

And…
By: Douglas Smith (douglas)
2013-03-06 20:46:12 GMT (+0000)

And BTW – can some point me to a source that clearly states what is the difference between Dasyscyphus, Dasyscyphella, Lachnum, and Lachnella? Or Hyaloscypha for that matter…

Did you check…
By: Douglas Smith (douglas)
2013-03-06 20:40:19 GMT (+0000)

Did you check the differences between this and Dasyscyphus virgineus? The paraphases shape, and the ornamentation of the hairs on the back of the cup?

Created: 2013-03-06 08:40:16 GMT (+0000)
Last modified: 2013-03-06 08:40:21 GMT (+0000)
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