I bought this as Ligularia przewalskii from a catalogue, don't remember which but at the time the other one Ligularia stenocephala was being sold everywhere with the cut leaves and I preferred the entire leaves with jagged edges.
Look at the sites you would expect to be correct, I know several places used to use the wrong photo for selling Ligularia stenocephala.
Purdue University ...
http://tulip.hort.purdue.edu/g...
It might have been called Ligularia "The Rocket" which has a synonym of Ligularia przewalskii 'The Rocket'. This is what it looks like on the RHS and I feel sure this is my plant which was probably sold as Ligularia przewalskii 'The Rocket' with "The Rocket" probably seeming to me at the time as a common name as I bought it probably around the year 2000 when paper catalogues were the main source.
https://www.rhs.org.uk/plants/...
Look at the photo of Ligularia przewalskii on the RHS, the leaves are smaller but similar and maybe look a bit more jagged on the edges but they don't look like Ligularia stenocephala which is what some sites are listing "The Rocket" as.
https://www.rhs.org.uk/Plants/...
So, I think this is Ligularia "The Rocket".
There's another called Ligularia przewalskii 'Dragon Wings' which has deeply cut leaves and was new in 2014.
https://www.rhs.org.uk/Plants/...
https://www.rhs.org.uk/plants/...
Definitely Ligularia ‘The Rocket’ but I don't know how it came to be, it's lost it's species name so is probably a hybrid (maybe some research on that is in order!)
http://www.perennials.com/plan...
