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27-10-2015 18:51

Hypocrea en Quercus suber
Javier Ormad Javier Ormad

Hola. Hypocrea sobre restos de Quercus suber. Has

26-10-2015 18:35

Gorgoniceps
Elisabeth Stöckli

Bonsoir,Voici une espèce trouvé sur et sous éco

26-10-2015 15:31

Geoglossum
Malcolm Greaves Malcolm Greaves

This was found alongside a Geoglossum hirsutum. Wi

27-10-2015 17:45

Peziza
hannie wijers

Hello,  I'dd to ask if anyone can help me with t

15-10-2015 12:38

Tilia
Dragiša Savic

Does anyone recognize this. On fallen leaves on a

24-10-2015 22:40

asco sûr Pleurozium ....
Tanja Böhning Tanja Böhning

Bonsoir,   J´ai déjà lu cette discussions :

27-10-2015 11:09

Scutellinia
Castillo Joseba Castillo Joseba

En el himenio de un Fomes fomentarius Alguna suge

10-10-2015 20:19

Deepened stone - lichen
Cvenkel Miran

see deep round craters, flat bottom, like 1 mm or

27-10-2015 20:01

Stone Lichen/s id ?
Cvenkel Miran

If in doubt, the brighter are is very pale blue. I

27-10-2015 05:56

Squamarina gypsacea ?
Cvenkel Miran

If I guessed right Squamarina gypsacea is only big

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Asco on Himalayan Balsam
Malcolm Greaves, 04-06-2020 18:28
Malcolm GreavesHello
Can someone help with this long necked flask found on a dead Himalayan Balsam stem.
Only 1/3mm with spores 5.3 x 2.5. The spores look to be developing a septa but I could find none with a fully developed one so migh just be the internal structure.
Thanks
Mal
  • message #63549
  • message #63549
  • message #63549
Guy Buddy, 04-06-2020 23:25
Re : Asco on Himalayan Balsam
Hey Mal
I will take a guess and say something in the ophiostomatales but with only the anamorph it’s hard to narrow it down.
Devin
Malcolm Greaves, 05-06-2020 08:42
Malcolm Greaves
Re : Asco on Himalayan Balsam
Ok thanks for that Devin.
Mal
Paul Cannon, 05-06-2020 18:12
Re : Asco on Himalayan Balsam
Hello Mal

It's possible that this could be Arxiomyces vitis (syn. Phaeostoma vitis), which has evanescent asci with ascospores about the size that you give. They have a single large germ pore (large in comparison to the spore width) at one end of the ascospore - I wasn't sure whether I could see that in your image. It would only be the second GBI collection, to my knowledge, and if you have more material I'd be interested to see it.

There's not much published info on the genus but I'll send you a paper that treats the species (as Phaeostoma).

Best wihes

Paul
Malcolm Greaves, 06-06-2020 22:23
Malcolm Greaves
Re : Asco on Himalayan Balsam
Thanks I will get it in the post.
Paul Cannon, 14-06-2020 17:02
Re : Asco on Himalayan Balsam
I've looked at the specimen that Mal kindly sent me. I think it is a species of Arxiomyces, but it is a little different from A. vitis and is probably undescribed.