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05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

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Associated with Sphaeropsis sapinea?
Jenny Seawright, 10-03-2015 14:50
Jenny SeawrightHello all,

I noticed a gelatinous substance on cone scales of Pinus sylvestris, in many (but not all) cases associated with black perithecia.

Spores / conidia from the black perithecia were light brown, simple but some faintly 1-septate, 29-37 x 15 µm - smaller than those suggested by Christian Lechat as Sphaeropsis sapinea in different post, but within the size range for that species?

Conidia from the gelatinous substance were hyaline, c. 24-29 x 3-4 µm. Are these from a different fungus?

With regards,
Jenny


  • message #34469
  • message #34469
  • message #34469
Chris Yeates, 10-03-2015 20:58
Chris Yeates
Re : Associated with Sphaeropsis sapinea?
Hi Jenny
I would still be happy that that is Sphaeropsis sapinea; I have seen it with two and even on occasion three septa. Regarding your second fungus, although your conidial sizes are at the very top end I would wonder about these being beta-condia of Phomopsis conorum now treated as one of the numerous synonyms of the plurivorous Diaporthe eres; I see this is currently in Species Fungorum under an anamorph name - "One Fungus, One Name" at work here? http://www.speciesfungorum.org/Names/SynSpecies.asp?RecordID=123547

best wishes
Chris
Jenny Seawright, 11-03-2015 10:34
Jenny Seawright
Re : Associated with Sphaeropsis sapinea?
Thanks for the reply Chris, and for confirming the Sphaeropsis. I'll try and find some spores and perithecia of Diaporthe eres among it.........

With regards
Jenny
Chris Yeates, 11-03-2015 15:43
Chris Yeates
Re : Associated with Sphaeropsis sapinea?
Hi Jenny
you won't necessarily be able to find the teleomorph. It is quite common to find Phomopsis spp. on dead twigs, stems, leaves etc., without the accompanying Diaporthe.

After a while recognising Phomopsis alpha*- and ß-conidia is generally quite straightforward - do you have access to the two volumes of British Stem & Leaf Fungi by W.B. Grove?

best wishes
Chris

*system is not letting me enter the Greek letter
Jenny Seawright, 11-03-2015 19:04
Jenny Seawright
Re : Associated with Sphaeropsis sapinea?
Thanks again Chris, but no, I don't have either volume of Grove's "Stem and Leaf Fungi"
John Plischke, 12-03-2015 00:25
John Plischke
Re : Associated with Sphaeropsis sapinea?
John Plischke, 12-03-2015 00:27
John Plischke
Re : Associated with Sphaeropsis sapinea?

This may work better the first did not take you to the book or download page


http://bibdigital.rjb.csic.es/ing/FichaLibro.php?Libro=5228


 

Jenny Seawright, 12-03-2015 11:21
Jenny Seawright
Re : Associated with Sphaeropsis sapinea?
Thank you both for your help - it is much appreciated!

With regards,
Jenny