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01-10-2013 10:28

Masanori Kutsuna

Hello everyone.I found small disco on dead stems.

01-10-2013 00:25

Malcolm  Greaves Malcolm Greaves

Can anyone help with this tan coloured asco on woo

29-09-2013 20:02

Enrique Rubio Enrique Rubio

Dear friendsCan you help me with these papers? Y.

01-10-2013 17:09

Luis Ballester Luis Ballester

Hello everyone.We found this Otidea in Cerler days

30-09-2013 22:59

Edit Szilvásy Edit Szilvásy

Hi all, I've found this ascomycete on oak cupules

30-09-2013 14:45

Alessio Pierotti Alessio Pierotti

Can someone help me find this contribution?Fungi c

30-09-2013 12:02

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos.Pongo unas fotos de unos "puntitos" n

30-09-2013 12:33

Hans-Otto Baral Hans-Otto Baral

Hidoes anybody have the following?Samuels, G.J. &a

30-09-2013 12:34

Hans-Otto Baral Hans-Otto Baral

Hidoes anybody have the following?Samuels, G.J. &a

29-09-2013 18:44

Michel Delpont Michel Delpont

Bonsoir à tous.Trouvé ce Scutellinia sur branche

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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