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28-11-2020 19:54

Blasco Rafael Blasco Rafael

Hola, He recogido este Hypoxylon creo puede ser ru

24-11-2020 14:46

Thomas Læssøe


28-11-2020 17:00

Edvin Johannesen Edvin Johannesen

Apothecia short-stipitate, pale yellow, 2-5 mm, or

26-11-2020 16:17

Blasco Rafael Blasco Rafael

Hola,  Alguno de Ustedes tiene documentación o a

27-11-2020 11:34

DirkW DirkW

salut a tous,on dead stem of indet. herbaceous pla

27-11-2020 16:48

Andgelo Mombert Andgelo Mombert

Bonsoir, Je suis intéressé par de la documentat

26-11-2020 17:58


Bonjour à chacune et à chacun,Je vous soumets un

27-11-2020 11:16

Joaquin Martin

Hi,I found this little ascomycete on rubus, I thin

11-02-2017 13:39

Nihad Omerovic

Hello,Loking for confirmation or opinions on this

26-11-2020 20:43

Marek Capoun Marek Capoun

Hello everybody, I need help with the determinatio

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Brown Hyaloscyphaceae?
Juuso Äikäs, 22-11-2020 07:40
I found these yesterday, growing on the inner surface of partly detached bark of a dead and standing, thin Betula sp. These were growing mixed with what I think is Calycina languida.

The outer hairs are tapering and bent at the tips. No iodine reactions with Lugol's solution. Asci 8-spored, with croziers. The cylindrical paraphyses were a bit difficult to see in a water mount, but they didn't seem to have VBs. The spores measure 5.2-6.9 x 2.3-2.9 micrometres. 

This collection seems interesting to me and I'd naturally like to find out the genus and the species...
  • message #66091
  • message #66091
Hans-Otto Baral, 22-11-2020 09:32
Hans-Otto Baral
Re : Brown Hyaloscyphaceae?
Was the substrate exposed so that it could easily get dry? It could be an Unguiculariopsis, although the spores look untypical, more like a Hyaloscypha. But the excipulum looks brownish.
Juuso Äikäs, 22-11-2020 10:00
Re : Brown Hyaloscyphaceae?
Ok, foreign territory to me. The bark was maybe a centimeter ajar or so, but it probably wouldn't dry up too easily. The temperature did dip below zero in the previous night, though.
Hans-Otto Baral, 22-11-2020 10:15
Hans-Otto Baral
Re : Brown Hyaloscyphaceae?
What does mean "ajar"? Of course you wrote "on standing thin Betula". How much above ground? That sounds tolerant in any case, which ai was a bit surprised regarding Calycina languida, though this species could well also be tolerant.
Juuso Äikäs, 22-11-2020 10:32
Re : Brown Hyaloscyphaceae?
I meant the detached end of the bark was around a centimeter's distance from the trunk (fairly widely open). And the height was hmm... maybe a meter or so.
Hans-Otto Baral, 22-11-2020 11:10
Hans-Otto Baral
Re : Brown Hyaloscyphaceae?
Ah yes, that means getting rapidly dry during a dry and sunny day, even in winter I guess.