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22-04-2018 18:46

Pycnidia on Nolina longifolia
Thorben Hülsewig

Hi there,yesterday i found on leaves of Nolina lon

22-04-2018 16:38

Gyromitra geogenia ?
Pavol Palo

Hello friends,what do you think about Gyromitra ge

22-04-2018 12:54

En caña de helecho (Filicopsida)
Castillo Joseba Castillo Joseba

Me mandan el material seco desde GaliciaEn rama de

05-02-2013 14:00

Byssonectria species
David Kelly

Hello,I found this small orange Ascomycete in a fo

20-04-2018 23:13

Small Peziza lookalike
Malcolm Greaves Malcolm Greaves

Can anyone tell me which genus this cup might be.

21-04-2018 19:02

Little yellowish discs on Picea abies
Juuso Äikäs

Found these a few days ago growing on a well-rotte

21-04-2018 10:03

Xylaria ?
Vasileios Kaounas Vasileios Kaounas

Found in moss in forest with Platanus orientalis.A

10-04-2018 06:20

Eutypa sp. with some tall ostiolar necks
Ethan Crenson

Hi all,Found recently in the Bronx, NYC, seemingly

21-04-2018 11:00

asco blanc tout poilu
Bernadette Lefèvre Bernadette Lefèvre

Trouvé en Province de Namur ( Belgique ) sur morc

21-04-2018 11:59

En nido de avispa betulina
Castillo Joseba Castillo Joseba

Me mandan el material seco desde GaliciaEn nido de

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Diaporthe?
Stoykov Dimitar, 16-04-2018 17:01
Stoykov DimitarHello,

Two days ago I found this interesting eutypoid fungus growing on ?possibly Alnus, or other similar thin twig of broadleaf shrub.
It has obviously protuding necks (up to 10 per protrusion) up to 1.7 x 0.3 mm in size. Asci (55-)-80-90 x (8-)10-13 µm, Spores ca 13.5-14.5(-17) x 3-3.5(-4) µm, fainly septate, small guttulate.


Regards,
Dimitar

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Stoykov Dimitar, 16-04-2018 17:53
Stoykov Dimitar
Re : Diaporthe?
I have checked Wehmeyer's monograph  (1933), and as under Melzer's reagent there is an apical annulus seen; spores are sometimes curved to slightly inequilateral, faintly septate, it seems to be close to Cryptodiaporthe hystrix on Acer, Alnus viridis (long-fusiform spores), and C. hranicensis (if grown on Tilia).
Peter Püwert, 16-04-2018 23:47
Peter Püwert
Re : Diaporthe?
Hi, why not Amphiporthe/ Diaporthe leiphaemia on Quercus ?
Greetings Peter.
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Stoykov Dimitar, 17-04-2018 09:33
Stoykov Dimitar
Re : Diaporthe?
Hi, Peter!
Interesting proposal, but the substratum seems to be dry twig of Alnus.
The beaks ale elongate and somewhat flattened, spores are mostly 2.5-3(-4) µm 
wide.
Cryptodiaporthe hystrix (=Apiognomonia hystrix, according to Sogonov et al. 2008, Stud. in Mycol.).
Regards,
Dimitar