Does anyone have a clue?

Jacksonville, AR(Zone 7b)

Its on my pandurata, species morning glory, for the last 3 yrs. Kills the above ground vines and stops seed production . It makes these raised blistered looking bumps with lvs turning yellow
some kind if virus, blight etc. There was no sign of it yesterday but today, its covered a lot
of territory, If I could find out what it is, I can see what would be most effective.

Thumbnail by patootie Thumbnail by patootie
Contra Costa County, CA(Zone 9b)

I would research including the word 'gall'. While galls are often caused by an insect or mite, it seems this one is perhaps a fungus.

A few minutes search turned up this:

http://keys.lucidcentral.org/keys/sweetpotato/key/Sweetpotato%20Diagnotes/Media/Html/TheProblems/DiseasesFungal/WhiteRust/White%20rust.htm

Jacksonville, AR(Zone 7b)

Diana, you solved it,. I'm sure this white rust is the culprit.
Copper fungicide should do the trick according to this article.
Thank you so much. Off to Lowes 1st thing in the morning to
get what I need. :-)

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