I think Aleuria is good (Melastiza are Aleurias with dark coloured marginal cells) - The spores with reticulum would fit in my eyes.

Neottiella are moss-parasites and look differently.

But possibly other genera must be considered that I don`t have in my mind.

What species I don`t know.

Regards Lothar

Thank you, Lothar!

I'll try to find something among the Aleuria. The problem is that very little information about it except Aleuria aurantia.

Hi to both
Have you considered a Sowerbyella species?

no - I didn`t - and that was a mistake.

Thanks, Enrique!

Best regards, Lothar

Hi, Vassily -

ecology and phenology of your fungus remember me of a Sowerbyella species I found with French friends many years ago near Angers (France) at the end of February on a meadow with grazing cattle. Size and ornamentation of the spores would fit also - BUT:   Sowerbyella species are usually stipitate! Your pictures do not show the underside of the fruitbodies - as far as I can see, they look sessile.

Our collection was later labelled "Discina parvispora" bei Ginette Trigaux and recombined into Sowerbyella by Jiri Moravec ("A new species and two new combinations in the genus Sowerbyella", Mycologia Helvetic 2(1): 93-102 (1986). Moravec writes: "Very interesting and outstanding is the winter fruiting time of the two collections of S. parvispora and the remarkable coprophilous habitat of the collection from Angers. However, also the type collection was found on a rich manured soil." (The type of "Discina parvispora" comes from the Champagne / France).

In 2006, Yao and Spooner revised the type material of Discina/Sowerbyella parvispora and synonymized the taxon with Sowerbyella radiculata.

By the way, the well known species Sowerbyella radiculata (or a closely related species) has several times been described from manured pastures (so by Dutch mycologist R.A. Maas Geesteranus), although the "true" S. radiculata normaly grows in Picea forests or mixed forests.

Best regards from Bavaria
Till

Hi Till
Do you have a pdf copy of Moravec's paper with the new combination?
Thanks in advance
enrirubio@asturnatura.com

Sorry
I didn't know it is in Ascomycete.org

Hello, Mr. Fedorenko,
could you please check the ascus base - is it simple septate, or with two septa? And, if I see correctly, the living spores have two polar groups of smaller guttules that later coalesce?  
(This too could help with finding the correct genus.)
Viktorie

Thank you, Till and Enrique!

I looked through all Sowerbyellas and tried to strike out unsuitable versions. Neither species is well suited.

Sowerbyella brevispora - fulvous to brown, have different spore surface.
Sowerbyella angustispora - narrow spores - sp 12-15.5 x 4.8-7 µm, Q=2.3-2.6
Sowerbyella crassisculpturata - another color, larger spores - 13.5-15 × 7.5-9 µm, and are ornamented with irregularly branched
Sowerbyella densireticulata – another color, larger spores - bright yellow, sp > 16 µm long
Sowerbyella imperialis – another color, narrow spores - yellow, 12,2-13,4 x 6,4-7,0 µm, Q = 1,8-2,0, apothecia with conifers
Sowerbyella unicolor - another color - yellow, 12-14 x 7-7,5 (Syn. of S. Imperialis ?)
Sowerbyella reguisii - larger spores - yellow-olive or orange, sp 17-22 µm long
Sowerbyella unicisa - another color - pale yellow, with pink tints
Sowerbyella fagicola - larger spores, sp 17-20 µm long, apothecia with Fagus
Sowerbyella laevispora - another color, larger spores - brown 17-20,5 × 10-13,5 µm
Sowerbyella phlyctispora - larger spores, spores 15-18 x 8.5-10 µm
Sowerbyella polaripustulata - with deciduous trees, spores spinose-echinulate
Sowerbyella radiculata var. petaloidea - another color, larger spores - yellow to ochraceous, (15-) 16-18 × 7.5-9 µm
Sowerbyella radiculata var. radiculata - another color, larger spores - yellow to ochraceous, 14.0-15.5 x 7.5-9.0 µm
Sowerbyella radiculata var. kewensis - another color, narrow spores - yellow to ochraceous 12-13 (-14) × 6.5-8 µm
Sowerbyella bauerana - synonym of S. radiculata? Yellow too?
Sowerbyella rhenana - another color, larger spores - orange-yellow, sp 17-22 µm long
Sowerbyella parvispora - another color, stipitate - greyish-yellow, 14-16.5 × 6.5-9 µm

I checked herbarium specimen, and saw no stipe (see photo).

G.Trigaux described the spore size including ornamentation. Moravec measured 10.5-13-(13.5) x 6.2-7.5-(7.8) um (without ornamentation) for the abovementioned collection from Angers. Still, the ascus base on your photo looks more like simple septate to me, which would be unusual for Sowerbyella.

Hello, Viktorie!

Here is photo of the asci and the external surface (for completeness). The base is pleurorynchous. About of spores you are right, at first there several guttules, which in dry stuff looks like bubble, and in alkaline everything is restored.

I made some searches and didn't find any species that could match with your collection... The genus Aleuria seems a good candidate for the genus. Where did you find this fungus?

Thank you, Nicolas!

Fungus were found in southern Kazakhstan in the steppe zone (here).