Recorded within a week and little more than a kilometre apart, these two fungi are superficially very similar, but as you can see from the micro-shots, quite different.
The fungi are related, both being anamorphic states of ascomycetes in the Mycosphaerellaceae.
One of the key features - the dark bunches of conidiophores of the Cercospora versus the colourless ones of the Ramularia - can just about (with a decent handlens) be made out in the field - though always worth double-checking when starting with these things.
Note how the conidiophores tend to cluster through the stomata on the leaves' under surfaces - the easiest point of exit.
Two horseradish parasites
- Chris Yeates
- Frequent user
- Posts: 1118
- Joined: Tue May 26, 2015 7:01 pm
- Location: Huddersfield, West Yorkshire
Two horseradish parasites
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"
Steely Dan - "Rose Darling"
-
- Regular user
- Posts: 59
- Joined: Mon Jul 27, 2015 10:41 am
Re: Two horseradish parasites
Thank you Chris for another fascinating presentation.
As soon as it stopsblowing half a gale and raining I'll have a look at our horseradish plants.
Christine
As soon as it stopsblowing half a gale and raining I'll have a look at our horseradish plants.
Christine
Christine Johnson
Outer Hebrides Biological Recording
Outer Hebrides Biological Recording