A tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle

Please try to include photos to show all parts of the fungus, eg top, stem, and gills.
Note any smells, and associated trees or plants (eg oak, birch). A spore print can be very useful.
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Aciauda
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A tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle

Post by Aciauda » Thu Jun 15, 2017 4:56 pm

This is a tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle. Height not more than 1mm.
Spores low-warted 0.3mu with net-like pattern made of short ridges on the surface. Size 12.5 mu

Any suggestions as to what it might be would be much appreciated.
Attachments
Rons tiny pin and ball xpt5.JPG
Dissecting microscope x 7.5
Rons tiny pin and ball x7 (2).JPG
Dissecting microscope x 30
Rons tiny black on nettle stem (2) again.jpg
Compound mic x400
Rons tiny black on nettle stem spores again.jpg
Compound mic x1000

Flaxton
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Re: A tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle

Post by Flaxton » Thu Jun 15, 2017 6:12 pm

Probably something close to Periconia byssoides
Mal
Ps welcome to the forum

Aciauda
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Re: A tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle

Post by Aciauda » Fri Jun 16, 2017 8:17 am

Thank you, Mal, I shall look it up
Archie

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Chris Yeates
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Re: A tiny thread-like black fungus with ball of spores as its head on dead stem of common nettle

Post by Chris Yeates » Fri Jun 16, 2017 4:35 pm

Hi
yes, definitely a Periconia, and as Mal suggests P. byssoides is the most likely. Key to a positive ID is whether there is a septum within the "head":
Perbys05.jpg
This is not always easy to see as the clustered globose conidia can make seeing into the centre of the head very tricky. Increasing the light intensity, often to more than one would normally use, can be useful, as can taking photographs - like optical sections - and then using Photoshop or similar to lighten the dark and mid tones.
regards
Chris
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"

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