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12-03-2014 22:21

Björn Wergen Björn Wergen

Hi friends,I have a collection on dead attached Il

12-03-2014 11:46

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all, Je sollicite votre ai

12-03-2014 17:04

Hermine Lotz-Winter Hermine Lotz-Winter

Hello,could anyone help me with this title:Rodrigu

12-03-2014 20:37

Maren Kamke Maren Kamke

Hi everybody,I got this find from a friend. Apothe

12-03-2014 20:26

Pavol Palo

Hello friends,may I ask you for help ? I would nee

12-03-2014 19:52

Joop van der Lee Joop van der Lee

Found on deer dung. Fruitbody: Diameter 300 um.As

12-03-2014 17:05

FRANCIS FOUCHIER

Bonjour je recherche au format pdf: BELLEMÈRE A.

11-03-2014 13:35

Garrido-Benavent Isaac

Dear all, This a tiny ascomycete developing just

11-03-2014 21:24

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Hello,Has anybody a key of the genus Botrytis? I

11-03-2014 14:06

Alessio Pierotti Alessio Pierotti

Some friends of the Forum can help me with this ar

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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