White Blister on Groundsel

White Blister on Groundsel

Observation - White Blister on Groundsel - UK and Ireland. Description: COMMENTS PRESENT. . Not an easy ID. I've had recent 'dealings' with Albugo here - https://www.ispotn

COMMENTS PRESENT.
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Not an easy ID. I've had recent 'dealings' with Albugo here - https://www.ispotnature.org/communities/uk-and-ireland/view/observation/810257/ so it seemed logical deducuction.
But it has a number of confusing synonyms, each of which has Web entries.
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Wiki is forthcoming with "Pustula tragopogonis, the goatsbeard white rust, is an oomycete plant pathogen unrelated to fungal organisms"
https://en.wikipedia.org/wiki/Pustula_tragopogonis. The question is, is it sometimes present on Senecio vulgaris (Common Groundsel)
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I have used this a number of time recently and it is well worth browsing - https://eprints.soton.ac.uk/439532/1/Chater_Woods_Evans_Stringer_Smith_2020_.pdf
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Old name - http://www.dorsetnature.co.uk/pages-gall/g-95.html
https://bladmineerders.nl/parasites/heterokonta/oomycota/peronosporales/pustula/pustula-obtusata/
Distribution - https://www.gbif.org/species/5424240
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See the note below about Taxonomy