for the beetle ID.
With the plant its the other way around.
The 1909 edition of Jepson's "A Flora of California" listed this plant as Eriodictyon parryi Greene. 1925 edition: Turricula parryi (A. Gray) J.F. Macbr.
After recent molecular work it became Eriodictyon parryi (A. Gray) Greene. Also, whereas this genus used to be in Hydrophyllaceae, it is now placed with Boraginaceae. Quite a number of nomenclatural changes recently on the plant side.
Evidently, not all websites have been updated.

I returned to USDA and now see they treated Turricula as a synonym; however, The Plant List (Kew Gardens) accepts it as the correct name. Further reading shows a molecular study that supports that view but, as you indicated, another such analysis favors Eriodictyon. Clearly there is discord among plant taxonomists...something that, of course, does not occur with beetle taxonomists. :-)

never seemed to have any doubt that Eriodictyon was the place to gather pollen. I've found them consistently on both the old Yerba Santa (all in Eriodictyon), as well as in E. parryi. :-)