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17-04-2016 13:38

Gernot Friebes

Hi,this Diatrype was found by a friend and I promi

17-04-2016 14:09

Gernot Friebes

On a dry, decorticated branch of Pinus sylvestris

16-04-2016 22:54

Lepista Zacarias

Dear all,Does anyone know something about the lich

16-04-2016 22:22

Edouard Evangelisti Edouard Evangelisti

Bonjour le forum,Quelqu'un aurait-il accès au doc

12-04-2016 11:06

Martin Bemmann Martin Bemmann

Dear all,can someone provide to me this new paper?

15-04-2016 22:51

Stip Helleman Stip Helleman

Dear all,this one I found on a last autumn fallen

15-04-2016 19:45

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I was given this pretty asco. It was found i

15-04-2016 19:34

Blasco Rafael Blasco Rafael

Hola, Este Lophodermium esta recogido en tallos ca

12-04-2016 01:32

M Jonathan M Jonathan

Found as primordium in material destined to be use

14-04-2016 10:55

Viktorie Halasu Viktorie Halasu

Hello,I would like to ask your opinion on this one

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Diatrype sp. (D. polycocca?)
Gernot Friebes, 17-04-2016 13:38
Hi,

this Diatrype was found by a friend and I promised to have a look at it even though the host is unfortunately unknown. However, the ascospores are interesting – there shouldn't be many species with ascospores that big (about 12–14(16) x 2.2–2.5(3) µm). In combination with the asci that appear to be Melzer-, using the key by Rappaz, I arrive at D. polycocca. If anyone has experience with this species or another suggestion I would be happy to hear your opinion!

Best wishes,
Gernot

(macrophotos are not mine)
  • message #42176
  • message #42176
  • message #42176
Jacques Fournier, 17-04-2016 14:40
Jacques Fournier
Re : Diatrype sp. (D. polycocca?)
Hi Gernot,
I never encountered this species but I agree with you it is very likely D. polycocca as described by Rappaz, even the geographical location fits well. I suggest you check the diameter of ostiolar necks, which is often a reliable character, much more than their height. A pity the host was not recorded.
Nice find!

Jacques
Gernot Friebes, 17-04-2016 17:40
Re : Diatrype sp. (D. polycocca?)
Many thanks, Jacques! I will do as you suggest and check the ostiolar necks.

Best wishes,
Gernot