Identification Please

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mikegriffiths
Posts: 48
Joined: Tue Nov 22, 2011 11:54 am

Identification Please

Post by mikegriffiths »

Identification Please:

Found on Hawthorn (Crataegus monogyna), initially thought it was a gall wasp of some kind. On further investigation, it looks like a fungus. Really stuck. Willaston Meadow.

Mike G.

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Unidentified gall on Hawthorn ???
Unidentified gall on Hawthorn ???
johnmcgaw
Posts: 15
Joined: Thu Jul 31, 2008 9:50 am

Re: Identification Please

Post by johnmcgaw »

Mike,

I think it could be the rust fungus Gymnosporangium clavariiforme which uses two hosts to complete it's life-cycle, juniper and hawthorn. The tufts in your photo are tubes that release fungal spores.

John

mikegriffiths
Posts: 48
Joined: Tue Nov 22, 2011 11:54 am

Re: Identification Please

Post by mikegriffiths »

Excellent, thanks.

Mike G.

SteveMcBill
Posts: 809
Joined: Thu Jul 31, 2008 9:15 am
Location: Runcorn, Cheshire
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Re: Identification Please

Post by SteveMcBill »

Yes, Tongues of Fire (Gymnosporangium clavariiforme) - often found on the underside of leaves of Hawthorn, there being a dark reddish brown mark showing on the top surface of the leaf - see here: https://www.naturespot.org.uk/species/tongues-fire

Steve

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