Accès membres

Mot de passe perdu? S'inscrire

26-06-2019 08:36

Marja Pennanen

Hello forum, these about 0,1-0,2 mm wide ascos gr

25-06-2019 21:23

Ethan Crenson

A couple of days ago I found these long-necked, pa

24-06-2019 12:01

Blasco Rafael Blasco Rafael

Hola, les presento otro hongo imperfecto, para ver

26-06-2019 07:57

Pintos Angel Pintos Angel

Hello, anybody has this article?Hönnel, F. Von (1

25-06-2019 13:46

Edvin Johannesen Edvin Johannesen

Hei, These apothecia are apparently growing on de

25-06-2019 09:45

Miguel Ãngel Ribes Miguel Ángel Ribes

Good morningOn 3/6/2019 we find at Tenerife (Canar

25-06-2019 17:23

Castillo Joseba Castillo Joseba

de ayer en madera de  haya  ...    A ver se 

25-06-2019 13:46

Edvin Johannesen Edvin Johannesen

Hei, These apothecia are apparently growing on de

25-06-2019 07:55

Blasco Rafael Blasco Rafael

Hola, alguno de ustedes dispone de este articulo ?

19-06-2019 19:55

Andgelo Mombert

Bonsoir, Apothécies jusqu'à 1,5 mm de diamètre

« < 1 2 3 4 5 > »
Hairy black asco
Malcolm Greaves, 05-02-2017 16:11
Malcolm  GreavesThis specimen was found on the dead stems of grass and rush cleared from a ditch in a local bog.
It had a black globose perithicum with a few very dark and very thick walled hairs. The spores were pale mostly 3 septate and bent. There were one or two othere types of spore found in the squash. The first skittle shaped and the second with 8 septa but I think both could have been introduced.
Can someone at least tell me the family
Thanks.
Mal
  • message #46999
  • message #46999
  • message #46999
  • message #46999
  • message #46999
Bernard Declercq, 05-02-2017 17:42
Bernard Declercq
Re : Hairy black asco
Dear Malcolm,

You collected most probably a Hilberina. Spore dimensions are close to those of H. dactylina (graminicolous) and H. spaghni (bryophilous) but the spores of these species are geniculate in the lower quarter.
Maybe Andy has a better idea?

Cheers,
Bernard
Malcolm Greaves, 05-02-2017 20:24
Malcolm  Greaves
Re : Hairy black asco
Thanks Bernard
Hilberina certainly looks to be a good bet. The Key in the article in Mycologia 106(3) 2014) by Miller et al keys out quickly to H punctata with the note " H punctata differs from other Hilberina species by its roughened ascospores that are rounded at both ends and curved or bent in the middle. The ascospores lack the pointed attenuate basal tip common in other species." I am struggling to make out the roughened ascospores and the spore size given is 28-40 x 4-4.5. I have many that fit that size but many that are much longer and most are wider.
Mal
Chris Yeates, 05-02-2017 23:31
Chris Yeates
Re : Hairy black asco
Hi Mal
that branched conidium in image #4 rings (distant) bells. It's similar to http://www.ascofrance.com/search_recolte/3992 though I don't think it is that.
regards
Chris

PS the specimens arrived OK and I hope to process them in the next few days
Malcolm Greaves, 07-02-2017 00:34
Malcolm  Greaves
Re : Hairy black asco
I have heard from Andrew and he said "I believe what you have here is Hilberina punctata. The spore size variation does not bother me too much"
Mal
Chris Yeates, 15-04-2019 13:30
Chris Yeates
Re : Hairy black asco
Hi Mal

returning to that stray conidium in #4 I think I've realised what it is and I wasn't a million miles away with my suggestion above. I think it's the Prosthemium anamorph of Pleomassaria holoschista (albeit lacking a few of its arms). Compare with the lowest two images in Enrique's excellent plate at http://www.centrodeestudiosmicologicosasturianos.org/?p=331 An Alnus specialist at that site would be quite appropriate.

Best wishes

Chris