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12-02-2026 21:34

patrice Callard

Bonjour, la face inférieure des feuilles ce certa

11-02-2026 22:15

William Slosse William Slosse

Today, February 11, 2026, we found the following R

12-02-2026 14:55

Thomas Læssøe

https://svampe.databasen.org/observations/10581810

11-02-2026 19:28

Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

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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