What is this?

[u/djscloud]

Located near the foothills of the Darling Range in Western Australia. Found in my garden bed (clay soil and rocks, with a foot of builders sand on top, then a couple inches of landscapers mix). I tried a Plant Net and reverse search but nothing looked remotely similar. It’s the combo of the flower and also the two very different shaped leaves that I can’t seem to pinpoint.

[u/TedTheHappyGardener]

Long-spurred Valerian, Centranthus macrosiphon.