Melampsora euphorbiae or Melampsora euphorbiae-dulcis

Gestart door carina, augustus 02, 2018, 10:53:54 AM

Vorige topic - Volgende topic

carina

Hello Julia,

I found a Melampsora on  Euphorbia lathyris.
Uredinia with capitate paraphyses. Urediniospores 15-19 x 18-24 µm. Teliospores subepidermal (23)-33-35-40-(43) x 8-14 µm.
Is this Melampsora euphoriae or Melampsora-dulcis?

Carina

Julia Kruse

Hey Carina,

could you give me a meassurement for the width of the head of the paraphysis? 14-16 or 15-20 µm?

The size of the teliospores hints in the direction of Melampsora euphorbiae.

For me this makes sense, becaus Euphorbia lathyris occurs often in gardens, together with Euphorbia peplus, which is quite common infected with Melampsora euphorbiae.

Cheers,
Julia



Julia Kruse

Hello Carina,

perfect! This fits with my determination, because the paraphyses head is 15-20 µm for Melampsora euphorbiae.

Thanks for meassuring!

Cheers,
Julia