Dicomycete on Bramble stem

[Ditiola]

Help with ID please (Chris)

I found this creamy white discomycete on a bramble stem. I have tried under Rubus in Ellis and Ellis and not been successful. I have looked through the keys to Hymenosyphus in Nordic Macromyces and the descriptions in Dennis with no luck.

The fruit bodies are up to 1.5mm
The spores are 20-23 (25) x 4.3-5 microns (see drawing below)
The paraphyses are straight with no swelling at the tips


Fruit Bodies



To prove it is on Bramble



Spores





Peter

[stickman]

Hi Peter.

Can I suggest a Hymenoscyphus possibly H.scutula? I may well be wrong but at least it's something to look at until Chris gets back

I am a little hesitant because this species usually has short tail like appendages on each end of the spores but your scetch does not show this. Have a google and you'll see what I mean.

Cheers, Nick.

[Chris Yeates]

Originally Posted by stickman

Hi Peter.

Can I suggest a Hymenoscyphus possibly H.scutula? I may well be wrong . . . .
Cheers, Nick.

don't think you are Nick - the asymmetrical spores (especially the one Peter has shown at bottom right, with an almost 'hooked' top end) are distinctive

the ciliate appendages are, as it were, 'optional' or are often overlooked unless specifically searched for; woody plant stems, such as those of mugwort, bramble and rosebay are typical substrates; it is a variable fungus and quite a number of forms and varieties have been described in the past - most are of questionable value

cheers

Chris

(now got some donkey dung - from Scarborough - to sort out - have also got high hopes of yet another addition to the Yorkshire fungus list . . . . )

[Ditiola]

Thanks Chris & Nick, now I can sleep at nights

Peter