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20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

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Massarina on Ilex
Björn Wergen, 12-03-2014 22:21
Björn WergenHi friends,

I have a collection on dead attached Ilex twigs, of which I mean it belongs to the genus Massarina. It has 0,3-0,45mm broad pseudothecia growing singly or clustered beneath the bark, inconspicuously cracking it with a small, 0,1mm long ostiolar neck. The spores are a bit "crazy": 2celled with very big guttules and constricted like I have never seen it in another species. The spores even collaps after exposuring in water after ~10 minutes and have a conspicuous, very thick sheath. Pseudoparaphyses are connected mostly above the asci, I think this is a good feature for the genus Massarina. I have checked both Bose 1961 and Aptroot 1995, but without any success. Only M. australiensis has some similar features, but way too small spores.

However, I have expected Vialaea insculpta on that twig, not another mysterious Massarina with so big spores...

BTW: I have also found some subiculum like hyphae around the pseudothecia.

Any ideas are welcome.

regards,
björn
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Jacques Fournier, 13-03-2014 09:17
Jacques Fournier
Re : Massarina on Ilex
Hi Bjorn,
Such ascospores occur in Asteromassaria. I only know A. pulchra that has separate lenticular ascomata lacking subicular hyphae and thus is different. How big are the ascospores? I am not aware of a comprehensive study of the genus, maybe someone else on the forum can help.
Cheers,
Jacques
Björn Wergen, 13-03-2014 11:05
Björn Wergen
Re : Massarina on Ilex
Hi Jacques,

I have also looked at Asteromassaria, but I did not find something until now. The spores are given in photo 4: 40-50x14-16,5µm.

regards,
björn
Martin Bemmann, 13-03-2014 11:41
Martin Bemmann
Re : Massarina on Ilex
Hi Björn,

I will send you a paper with A. pulchra by PM.

Regards
Martin