Lucy Corrander's picture

What are these Sooty smudges on blackberry leaves?

Observed: 29th February 2012 By: Lucy CorranderLucy Corrander’s reputation in Fungi and LichensLucy Corrander’s reputation in Fungi and Lichens
LUCY CORRANDER - SOOTY MARKS ON BACK OF BLACKBERRY LEAF - FEBRUARY 29TH 2012 - IMG_0742
Description:

Like dabs of soot on the backs of old blackberry leaves.

Identifications

Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.

Comments

Syrphus's picture

At this size it will almost

At this size it will almost certainly be P. violaceum. Strictly you should look at spores, but P. bulbosum spore-masses are much smaller than these.

M.

TRY

recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.

Lucy Corrander's picture

Phragmidium violaceum

Thanks for ID. Have just googled it and find it can be used as a biological control against brambles. There are acres of brambles where I took this photo - does the presence of Phragmidium violaceum mean they might be at risk?

Blog - Loose and Leafy - http://looseandleafy.blogspot.com/

Syrphus's picture

No - it is everywhere,

No - it is everywhere, abundant, and there is no sign of Brambles dying off. It is a natural native fungus, specific to Brambles. I don't know how you would use it as a practical way to get rid of Brambles - reading the papers on the subject, I think you would be better just getting a spade!

M.

TRY

recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.