14-04-2024 10:31
Castillo Joseba
Me mandan el material seco de Galicia (España) re
13-04-2024 12:11
Karen PoulsenHi I found these under loose bark on a fallen bra
13-04-2024 12:49
Karen PoulsenOn standing stem from last year. Surrounded by hyp
13-04-2024 17:39
Karen PoulsenHi, On Myxarium on the cutting surface of tall st
18-10-2022 01:37
Zuidland PeterI need help with this one please.Vast numbers of t
12-04-2024 12:22
B Shelbourne
Orbilia xanthostigma, sensu Baral (2020). • Hab
11-04-2024 16:30
Laurent LENEL
Bonjour à tous, j'ai récolté quelques morilles
Niesslia-like Perithecia on Well Rotted Alnus Trunk
Peter Thompson,
13-05-2018 12:43
I have found some tiny, spherical perithecia with short hairs growing on decorticated and well decayed wood from a trunk of Alnus glutinosa.
The hairs are thick walled, dark brown, with bulbous bases and rounded tips. They strongly resemble the rigid hairs of species of Niesslia, typically measuring 82.5 - 92.5 x 5.25 um.
The spores are 8- 11-septate, filled with tiny drops in all cells and typically measuring 56 - 65 x 8 - 8.5 um. Hyaline and tapering to rounded ends. there are 8 spores per ascus. The ascus tips show no reaction to lugol.
I have attached a photo of the fruit bodies and a micro photo of the hairs, asci and spores.
I wonder if anyone has an idea as to what they might be?
Thank You,
With Best Wishes,
Peter.
Gernot Friebes,
13-05-2018 12:51
Re : Niesslia-like Perithecia on Well Rotted Alnus Trunk
Hi, Peter,
the ascomata and ascospores remind me of Acanthostigma – it might be worth looking into that direction.
Best wishes,
Gernot
the ascomata and ascospores remind me of Acanthostigma – it might be worth looking into that direction.
Best wishes,
Gernot
Peter Thompson,
13-05-2018 18:36
Re : Niesslia-like Perithecia on Well Rotted Alnus Trunk
Hello Gernot,
Thank you for your reply.
Acanthostigma is an unfamiliar genus for me, so I have had a look into the options for host type and macro / micro characteristics and I now believe that my sample is A. minutum.
Thank you for your help.
With Best Wishes,
Peter.
Thank you for your reply.
Acanthostigma is an unfamiliar genus for me, so I have had a look into the options for host type and macro / micro characteristics and I now believe that my sample is A. minutum.
Thank you for your help.
With Best Wishes,
Peter.