[derefr]

> I assume, if you are under the "aegis of Britain" ;)

Not me, but certainly the provincial legislative assemblies of 1867 :)

> there are specific acts, charters and traditions that form constitutional law, and define the clear divisions of responsibility between the provincial and federal government

The difference is that these powers are a delegation of federal power to the provinces, rather than reservation of state power away from a federation.

The relationship between the federal and provincial governments in Canada is a lot like the relationship between the Queen and the parliament in Britain: in practice, right now, the Queen is powerless; but technically, the parliament's power derives from the Queen, and there's nothing legally stopping a monarch from revoking that delegation of power. In the current cultural climate, that'd be unthinkable; but all it would take is "mere" sectarian shift to allow for it.

[eigenvector]

No, that's not correct. Provincial and federal power are both derived equally and in parallel from the Crown. One is not subordinate to the other.