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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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Hymenoscyphus sachalinensis in southern Germany
Hans-Otto Baral, 21-08-2017 21:19
Hans-Otto BaralHi all

yesterday I finally found in my home village in Tübingen Hymenoscyphus sachalinensis alias H. aff. dearnessii in masses, it is my first personal collection. I did not expect that because over all the years I never saw it, although looking now and then on its substrate, dead stems of Reynoutria sachalinensis (or R. x bohemica, rarely R. japonica).

Here I add the most actual map of the (still not validly described) species, where you can see that large areas are without a record, to my knowledge. In case you have collected it in such an "empty" area, please do not hesitate and contact me.

The species is very frequent in the middle of Germany, and now I assume that it can perhaps be found all over central Europe. Certainly it is invasive, the question is only at what time it arrived at which place. The first known collections were made as late as 2001.

I also add some images of my collection. The species differs from H. scutula in the abundant growth of the bright yellow apothecia, distinctly longer spores (30-36) which are not really scutuloid because the asymmetry at the spore apex is lacking and therefore the upper setula inserted apically.

Zotto
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