22-11-2015 15:25
Tanja Böhning
Bonjour, La semaine derière j´ai collecté un A
22-11-2015 20:59
Tanja Böhning
Bonsoir, Hièr j´ai collecté des Scutellin
23-11-2015 11:55
Francisco SÁNCHEZ
Dans l'humus chêne. 22/11/2015 Microscopie sembl
22-11-2015 15:49
Björn Wergen
Hi there,does anyone have these papers?Hino,I. (19
21-11-2015 21:52
Bernard CLESSE
Bonsoir à tous,Un ami m'envoie ces photos d'un py
21-11-2015 22:48
Bernard CLESSE
Bonsoir à tous, J'ai trouvé dernièrement en gra
21-11-2015 11:19
Castillo Joseba
En Geoglossum parasitado me aparecen estas
Lophiostoma sp on Acer query
Watt John,
07-11-2018 16:15
Growing on decorticate Acer is what otherwise seems to match a Lophiostoma sp though the many peritheciea are situated on a continuous black subiculum, which does not seem typical.
I see there are a number of Lophiostoma sps.: this one has transverse and longitudinal septae ( up to 5)
but the ascospores are rather smaller than L. compressum at 17.3 x 6.6 mc. I was unable to distinguish features of the ostiole on this rather dry collection.
John Watt
Alain GARDIENNET,
07-11-2018 16:41
Re : Lophiostoma sp on Acer query
Hi,
Please check if it's really one Lophiostoma species. I don't think. Ascomata should be immersed, with a lateral compressed neck. You can compare with pictures of Ascofrance database.
I guess that your ascomata are superficial growing on an old pyrenomycete. Microscopy reminds the genus Capronia.
Alain
Watt John,
07-11-2018 21:16
Re : Lophiostoma sp on Acer query
Thanks you, especially for pointing out the underlying pyrenomycete; that makes sense now.
I shall check out Capronia sps, which are also new to me; spores look very similar. Learning curve slowly going up.
Stange to say, whilst looking at my next collection, I could unexpectedly see such spores , but this time 7 septate and rather more pointed at each end, in the squash and then found 0.25 mm perithecia on bark and also on white subiculum which otherwise doesn't reveal any features. May remain a mystery.
Kind regards,
John Watt
Ormskirk, Lancashire