More white / yellow Rusts?

[MWP admin]

I met this plant at wied incita valley sides which on first impression, it reminded me of yellow or white rusts (albugo species). If so, then it seems that this season there is spreading infestation of Albuga, since in a short period of time there has been isolated albugo on Portulaca oleracea and Lobularia maritima.

[MWP admin]

I took leaf samples of this Salvia species to the mycology lab of plant health and on examining under the microscope we found no living forms that can attributed to fungi.

The yellow patches might have resulted as a defence or reaction of the plant to some insect. In fact on looking further the patches with the microscope, we have noted very small larvae in the centre of few of the patches.

Further study on identification of these larvae will follow.

[RB]

Looks like salvia, but likely Phlomis fruticosa, Jerusalem Sage, which is found in the wild.

RB

[MWP admin]

Definitely Phlomis fruticosa, (Salvia tal Madonna) but the post was concerning the yellow spots, which are some sort of disease.