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26-04-2025 07:15

Dragiša Savic

Hello everyone,the lichen is Candelariella aurella

25-04-2025 22:48

Gustaf Fredell Gustaf Fredell

Hello,I hope everything is going well. I couple mo

18-04-2025 23:16

Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

24-04-2025 21:35

Thorben Hülsewig

Hi there,last week i could found this asco on an S

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by J

25-04-2025 09:33

Josep Torres Josep Torres

Ascomata shaped like deformed black grains, measur

24-04-2025 21:53

Lothar Krieglsteiner Lothar Krieglsteiner

... 15.7.24 in the Alps. There were many asci with

23-04-2025 20:16

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon Looking for Octospores / Lamprospo

24-04-2025 15:03

Henri Koskinen

Hello, I collected this Lasiobolus 22.04. near Hel

23-04-2025 19:58

Francois Guay Francois Guay

I found this interesting Orbilia sp. one year ago

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Nectria on Frangula alnus
Björn Wergen, 27-07-2011 13:59
Björn WergenHi,

yesterday I have found a new Nectria on dead Frangula-twigs. It has very large spores with a length sometimes over 25 µm. The fruitbodies are clustered on a Stroma which seems not to be well developed, perithecia are about 0,2-0,4 mm and pale red to orange-red oder orange-brown. 

The interesting fact is, that the asci have almost only 4 or 6 spores. I didn't see any asci with 8 spores. Spore ornamentation seems to be smooth, without striae. I will add some photos here, perhaps someone can help me with this or at least with a good nectria-key (I have only one key with striae-spored nectria...)

best regards,
kazuya
  • message #15985
  • message #15985
Björn Wergen, 27-07-2011 15:01
Björn Wergen
Re : Nectria on Frangula alnus
note: I think the small spores are "secondary spores", aren't they? I had called them "conidia spores"...
Christian Lechat, 27-07-2011 20:37
Christian Lechat
Re : Nectria on Frangula alnus
Dear Kazuya,
could you please make a vertical section through ascomatal wall and stroma?
Conidia looks like Tubercularia.

Christian