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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

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Pyreno with striate ascospores
Maren Kamke, 20-07-2014 23:13
Maren KamkeHi everybody,
I found this species on Impatiens and Meconopsis. Perethecia immersed, 0,1 mm. Spores (10-7) 8,4 x 2,95 (2,5-3) µm, hyaline, finly striate. Asci uniseriate, up to 70x45 µm, IKL negative.
Thank you,
Regards Maren
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Gernot Friebes, 20-07-2014 23:18
Re : Pyreno with striate ascospores
Hi Maren,

probably a Phomatospora.

Best wishes,
Gernot
Alain GARDIENNET, 21-07-2014 07:23
Alain GARDIENNET
Re : Pyreno with striate ascospores

Yes, and probably P. berkeleyii.


Alain

Maren Kamke, 21-07-2014 07:24
Maren Kamke
Re : Pyreno with striate ascospores
Thank you Gernot and Alain,
it is P. berkeleyi, described on grasses. I was confused because I didn't find the mentioning of the striation of the spores.
Regards Maren
Alain GARDIENNET, 21-07-2014 08:23
Alain GARDIENNET
Re : Pyreno with striate ascospores

Please look at Mycotaxon 19, striation is well mentionned.


P. berkeleyii is usual on grasses, but it has been seen on other plants like Urtica.


Alain

Jaklitsch Walter, 21-07-2014 21:28
Re : Pyreno with striate ascospores
Hi,
the original host is potato stalks. The type species is not easy to grasp and there may be several similar-looking species.
Maren, could you be so kind and send me some good material for culturing? We would need this to solve a rather "ancient" question about the position of another species.
Thanks, Walter