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27-11-2025 12:01

Valsa/Cytospora on Cryptomeria bark - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

another loculo on Aesculus with muriform spores - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10493918

17-09-2025 10:50

Ascomycete on Polystichum proliferum
Heather Merrylees

Hi there!I am hoping for any advice on the identif

29-11-2025 08:40

Small hyalin discomycete on Fagus
Andreas Millinger Andreas Millinger

Hello,on a splintered part of a branch on the grou

28-11-2025 16:45

Ascocoryne lilacina?
Nogueira Héctor

November 23, 2025 Requejo de Sanabria (León) SPAI

25-11-2025 14:24

Anybody recognize this strange anamorphic fungus on Sambucus nigra, Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10490522

27-11-2025 15:41

Hysteriales (Mytilinidion mytilinellum??) on Larix cone, with too? big spores - Denmark
Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

27-11-2025 11:31

Loculo on Aesculus - Denmark
Thomas Læssøe

Collectors notes: Immersed ascomata, erumpent thro

23-09-2025 13:31

"Bertia-like" Sordariales on Typha - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10534623

26-11-2025 18:13

All Mycotaxon issue available in BHL
Jason Karakehian Jason Karakehian

The entire run of Mycotaxon is now available throu

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yellow small disco
Masanori Kutsuna, 01-10-2013 10:28
Hello everyone.I found small disco on dead stems.

Disc yellowish, up to 2 mm., stalk whitish, smooth and slender.
Asci 142-160 x 12.8-14.4 microns, IKI+.
Ascospores 40-48.7 x 4.5-5.8 microns.
Paraphyses filled with refractive contents.
Ectal excipulum, parallel, thick-wall, gelatinous hyphae.


Is this a Crocireas?
I couldn't identify by Carpenter's monograph.


Best wishes,
Kutsuna

  • message #25315
  • message #25315
Hans-Otto Baral, 01-10-2013 12:52
Hans-Otto Baral
Re : yellow small disco
Hi Kutsuna

This is certainly a Hymenoscyphus in which the excipular cells are also somewhat gelatinized. Such strongly heteropolar spores are unknown in Crocicreas or Cyathicula.

This find is interesting, it reminds me of the N-American Hymenoscyphus dearnessii, a variant of which is known from Europe, here exclusively on Fallopia (Reynoutria). But the spores are not as big as you say, also they should have bristles at the ends.


Have you more microphotos? Ascus croziers?  In which part of thw wordl did you collect, and what could the substrate be?

Zotto
Masanori Kutsuna, 02-10-2013 01:40
Re : yellow small disco
Dear Zotto

Thank you for your reply.

This disco collected in bush near beech forest, Tottori, Japan, 22.Sept.2012.
Substrate uncertain herbaceous stem, I think Polygonaceae.


I have no more microphotos, but I couldn't observe coriziers and bristles.

Kutsuna   

Hans-Otto Baral, 02-10-2013 10:16
Hans-Otto Baral
Re : yellow small disco
There is a report of a Hymenoscyphus sp. from China, maybe it is this species, though the spores are not as attanuated at the base as in yours.

Yu et al. 2000, Mycotaxon 75: 395-408

This sounds like a new species.

Zotto
Masanori Kutsuna, 02-10-2013 10:23
Re : yellow small disco
Thank you again.

Kutsuna