Ragwort

Ragwort

Observation - Ragwort - UK and Ireland. Description: Is it possible to identify Senecio from illustrations? Certainly the various keys are very detailed

Is it possible to identify Senecio from illustrations? Certainly the various keys are very detailed and quite unforgiving. And yet there are a lot of Senecio Observations here with one illustration and strong agreements
The maximum number of illustrations then, to promote another ID or discussion.
Yellow certainly, tall and robust, strong even but very variable in different micro-climates and environments
Growing thickly in some fields, even cattle and pony ones here
.
Is it possible to separate species by seed structure? Pictures 14&15