Senecio jacobsenii (not jacobaea) is an accepted name on the Plant List, and it has one of my long lost relatives named who was obviously one of those plant hunters in days gone by.
http://www.theplantlist.org/tp...
http://www.google.co.uk/search...
This is Jacobaea vulgaris (Senecio jacobaea)
http://www.google.co.uk/search...
How odd that there is a Senecio which looks like Crassula!
