Lophiostoma sp on Acer query - Forum ASCOFrance

06-05-2026 11:25

En excrementos de caballo

Castillo Joseba

Me mandan el material seco de Galicia (España) re

28-04-2026 20:07

Marthamycetales? - from Portugal

Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

05-05-2026 22:40

Plagiostoma on Salix

Gernot Friebes

Hi,I believe this is a Plagiostoma growing on a Sa

04-05-2026 18:13

Black rod-like structures with branching curved conidiophores

Stephen Martin Mifsud

ID request for what seems to be a true aquatic fun

04-05-2026 16:39

Black pseudothecia on submerged foliar debris - Pleospora sp.

Stephen Martin Mifsud

ID request: This specimen was collected in Malta o

28-07-2011 18:31

Velenovsky book "Monographia Discomycetum Bohemiae"

Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

04-05-2026 09:50

Una en semilas de Acacia

Castillo Joseba

Me mandan el material seco de Galicia,(España) re

03-05-2026 11:38

En dunas

Castillo Joseba

Me mandan el material seco, recolectado en dunasLo

02-05-2026 12:42

Hilfe :pour cette éventuelle Orbiliaceae

Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Small perithecia on Oenanthe crocata

Pauline. Penna

Bonjour Please can someone help me with this id

« < 1 2 3 4 5 > »

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

Accès membres

Forum AscoFrance