Fungus on Holly

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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markwilson
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Joined: Mon Jun 01, 2015 1:42 pm

Fungus on Holly

Post by markwilson » Wed Jan 02, 2019 3:07 pm

Found growing on Holly at least some dead branches - I tentatively have thought Nectria but don't know which one. Cluster of grape structures 2-3mm across
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Chris Yeates
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Location: Huddersfield, West Yorkshire

Re: Fungus on Holly

Post by Chris Yeates » Thu Jan 03, 2019 2:13 am

Nectria and associated genera form a very difficult area, now more is known about them. Ideally you need:
  • to know whether the perithecia have been formed on a stroma (probably 'yes' in this case)
    measurements / descriptions of asci and ascopores
    a thin section through a perithecium
    a description of an anamorphic state, if present (culturing might be necessary)
    to be 100% sure sequencing is advised
There are of course some species which are fairly obvious providing you have some of that information. Unfortunately in this case, even knowing it was on Ilex is of little help. "Nectria sp." is a safe bet though . . .
Sorry
Chris
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"

markwilson
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Posts: 47
Joined: Mon Jun 01, 2015 1:42 pm

Re: Fungus on Holly

Post by markwilson » Thu Jan 03, 2019 8:46 am

Hi Chris

Thanks for your comments - I think I'll stick at Nectria sp.

Have a good New Year

Mark

Flaxton
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Re: Fungus on Holly

Post by Flaxton » Tue Jan 08, 2019 10:15 pm

Worth looking out for Mollisia subglobosa which grows with Nectria on Holly.

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