[rustbucket]

Thanks Mike and Mark. I have 214 records for this rust on Cp in my patch – 50:50 uredinia,telia so it is quite common. Never seen the stage on Ribes but you will find this early in the year in the spring/summer. Infection causes the top of the leaf (gooseberry) to be bright red and when looked at with a x10 lens you will see little orange dots (spermogonia) in the discoloured area.

Good to have met up on Saturday Mark, hope you enjoyed the talk.

N

[rustbucket]

Hi Mike – very common rust on Carex pendula but extremely rare on the alternate host Ribes

[rustbucket]

You have to be careful with rose rusts as they are difficult. You need to look at the pores to see what size they are and whether the spines are sharp pointed (echinulate) or bluntish (verrucose-echinulate). Best to use a x100 oil objective.

[Author]

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