17-10-2025 18:45
Riet van Oosten
Hello, Found by Laurens van der Linde, Oct. 2025.
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
15-10-2025 16:39
Edvin Johannesen
These tiny (0.2-0.6 mm), white, pulvinate apotheci
03-10-2025 13:44
Riet van Oosten
Hello, Found by Laurens van der Linde on Populus
13-10-2025 19:05
Louis DENYBonjour forumSur tronc décortiqué de feuillu x,
11-10-2025 20:27
Marcel Heyligen
Found on a barked branch, 14 mm in diameter, of Ro
09-10-2025 22:14
S. RebeccaWe just had the Bavarian Mycology Conference in Au
10-10-2025 00:49
Ethan CrensonHello all, This was found last weekend on a hardw
Lophiostoma on Rhamnus alaterna
Hans-Otto Baral,
11-06-2009 22:33
Hellohere is a Lophiostoma on Rhamnus alaterna collected by Jean-Paul Priou in Portugal, together with a new Orbilia. Therefore I had a look at it and could not find a name with Holm (Lophiostomaceae of Sweden).
Sp. *(18.5-)20-23(-25) x 7.2-8 µm, 3-5-septate, light ochre-brown (surely so when mature, though no living mature asci seen), very finely & densely punctate, no appendages, dark brown when dead & collapsed.
Zotto
Hans-Otto Baral,
11-06-2009 22:34
Re:Lophiostoma on Rhamnus alaterna
Punctation discernible on upper right spore
Jacques Fournier,
11-06-2009 23:36
Re:Lophiostoma on Rhamnus alaterna
Hi Zotto and Jean Paul,
I think Lophiostoma quadrinucleatum matches this collection fairly well if it is viewed in the broad sense
accepted by Holm & Holm including five septate ascospores. Such spores are also accepted by Mathiassen (1993) for collections on Salix in Norway.
Best wishes,
Jacques
I think Lophiostoma quadrinucleatum matches this collection fairly well if it is viewed in the broad sense
accepted by Holm & Holm including five septate ascospores. Such spores are also accepted by Mathiassen (1993) for collections on Salix in Norway.
Best wishes,
Jacques
Hans-Otto Baral,
12-06-2009 13:17
Re:Lophiostoma on Rhamnus alaterna
Hi Jacques
many thanks! The type of L. quadrinucleatum was even on Rhamnus, but Salix, Prunus and Berberis are also cited in Holm & Holm. I only wonder why the puntation of the spore surface is not mentioned. Perhaps too difficult to see?
Zotto
many thanks! The type of L. quadrinucleatum was even on Rhamnus, but Salix, Prunus and Berberis are also cited in Holm & Holm. I only wonder why the puntation of the spore surface is not mentioned. Perhaps too difficult to see?
Zotto