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30-04-2024 16:22

François Bartholomeeusen

Dear forum members,On April 25 2024, I found one f

03-05-2024 18:04

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Rubus fr

02-05-2024 20:04

éric ROMERO éric ROMERO

Bonjour, Une question à propos de la réaction a

01-05-2024 23:22

Ethan Crenson

Hi all, Found late last week in a New York City p

29-04-2024 21:32

Robin Isaksson Robin Isaksson

Hi! Found in Sweden. Ascomata with haris, se

01-05-2024 12:54

F. JAVIER BALDA JAUREGUI

Hello, everyone.An idea for this pyreno, I found u

30-04-2024 16:59

Sylvie Le Goff

Bonjour. Petite pézize récoltée au sol en bordu

30-04-2024 19:43

Gernot Friebes

Hi!We observed this hyphomycete growing between le

30-04-2024 16:08

maurice pelissier maurice pelissier

BonjourTrouvé dans un torrent de montagne au Chir

29-04-2024 21:51

Mathias Hass Mathias Hass

Hi everyone, Found on attached branches of top pa

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strange Dothideomycetes?
Björn Wergen, 19-01-2011 19:52
Björn WergenHello again,

I have recently found another interesting fungus growing on decideous wood (Fagus or Carpinus). I will give you a description of it right here:

Fruitbody consisting of clustered pseudothecia (similar to Dothiora ribesia) embedded (partly?) in an unshaped, black stroma 0,8-1,4 mm, which shows grey to darkgrey colors after cutting it; "Pseudothecia" sphaerical, 0,1-0,2 mm, pale brownish, with a protuding ostiolus covered with black hairs.
Spores 14-17x5-6 µm, hyalin, pale brownish, 6-9x septate with a few longitudinale septes, in almost all cells with one bigger vakuole, smooth, constricted at septae.
Asci 50-60x8-12 µm, with 8 spores in an irregularly biseriate arrangement, short stalked, claviform to cylindrical, IKI- (no reaction).
Paraphyses inconsiderable, very tall, hyaline.
Hairs 10-14x2,9-4,3 µm, consisting of 1 or 2 cells, dark brown, smooth (reminds of hairs of Podospora-species).

What can it be? One more question: is Ellis&Ellis "Microfungi on Land Plants" a book to determine this species? I know about it but I wish to have some critics ;)

regards,
kazuya
  • message #13954
Björn Wergen, 19-01-2011 19:52
Björn Wergen
Re:strange Dothideomycetes?
close-up
  • message #13955
Björn Wergen, 19-01-2011 19:52
Björn Wergen
Re:strange Dothideomycetes?
micro 1
  • message #13956
Björn Wergen, 19-01-2011 19:53
Björn Wergen
Re:strange Dothideomycetes?
micro 2
  • message #13957
Hans-Otto Baral, 19-01-2011 22:45
Hans-Otto Baral
Re:strange Dothideomycetes?
Hallo Kazama

This is Capronia (earlier Berlesiella) nigerrima, a fungus growing parasitic on Eutypa etc.

See f.ex. Schmid & Schmid 2: Nr, 95

Zotto
Björn Wergen, 19-01-2011 22:54
Björn Wergen
Re:strange Dothideomycetes?
perhaps Capronia nigerrima? :D

regards,
Kazuya
Björn Wergen, 19-01-2011 22:55
Björn Wergen
Re:strange Dothideomycetes?
Hmpf, Zotto, warum bist du immer schneller als ich? :D jedenfalls wars mir jetzt klar geworden ^^

by the way: I have determined this species (I found it 2 years ago...but it seems as if I was to lazy to remember :D) with ARX/MÜLLER 1975: A re-evelation of the bitunicate ascomycetes with keys to families and genera.

regards and thanks to Zotto anyway ;)
Kazuya
Hans-Otto Baral, 19-01-2011 22:57
Hans-Otto Baral
Re:strange Dothideomycetes?
Die hatten Guy und ich früher oft gefunden, als wir auf Prunus spinosa sammelten .-)

Zotto