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24-10-2012 21:16

peter peperkamp

this asco on twigs, Asci slightly J+ and operculat

24-10-2012 21:19

Chris Yeates Chris Yeates

Bonsoir tousI am finding myself in the middle of a

21-10-2012 23:33

Esquivel-Rios Eduardo

Hi All.Some time ago I report in this forum the An

20-10-2012 02:13

Esquivel-Rios Eduardo

Hello all I recently found this fungus on a dead

23-10-2012 22:53

Esquivel-Rios Eduardo

Hi All.I recently found on dead stems of Chusquea

24-10-2012 04:05

M Jonathan M Jonathan

voila, je sèche , pas grand chose a ajouter sauf

14-10-2012 21:34

Esquivel-Rios Eduardo

 A Xylaria globosa (Spreng. ex Fr.) Mont. is a on

22-10-2012 14:24

Joop van der Lee Joop van der Lee

Found on horse dung 3 different spicies which I ca

16-07-2012 09:20

Alain GARDIENNET Alain GARDIENNET

Bonjour,Des problèmes de détermination avec ce p

19-10-2012 03:23

Esquivel-Rios Eduardo

Hi Everyone.I recently found this discomicete,  l

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Hymenoscyphys on Typha
Juuso Äikäs, 19-09-2022 07:40
These rather small (up to 0.8 mm) beige Hymenoscyphus fruitbodies were growing on a dead Typha stem at the shore of a pond.

Croziers present, IKI+, paraphyses full of tiny VBs. Spores naviculiform, measuring 18.7 - 19.7 × 4.2 - 5 µm.

Any idea what the species is?
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Hans-Otto Baral, 19-09-2022 09:39
Hans-Otto Baral
Re : Hymenoscyphys on Typha
Although there is no doubt I would appreciate a photo of an immature dead ascus in IKI to see the Hymenoscyphus-type of ring. The excipulum is probably of prismatic cells?

The spores appear to be almost non-scutuloid. My guess is Hymenoscyphus macroguttatus.

Torsten Richter has a Hymenoscyphus typhae nom. prov. but that has short stalks and wider spores with often 1-2 septa inside the living asci. It is in the varicosporoides folder of Cudoniella (HB 10115). Excipulum alsmost globose, so a totally different species.
Juuso Äikäs, 19-09-2022 11:56
Re : Hymenoscyphys on Typha
Thanks again! I checked your H. macroguttatus folder, and that seems to fit pretty well. Yeah, these stalks are fairly long and there were no septas in the spores, but it's good to be aware of that H. typhae species. The excipulum seems to be of textura prismatica.
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Hans-Otto Baral, 19-09-2022 12:47
Hans-Otto Baral
Re : Hymenoscyphys on Typha
The ring looks a bit thick, anyway I have little doubt. Yes, prismatic.