Aloha John, and thanks for the nice ticket to the land of pakalola (shhhh).
Seriously, thanks for the photos. It's amazing how such a far flung species can still have the same preferences. The "English Sundew" loves to be up to the knees in water.
Is the other flower a banksia or ginger perhaps? It sure is intense. Was it fragarant? Ahh, you probably have a perfume dead nose living there where the flowers grow on roofs.
I asume this is a very local instance of D. anglica and that there are no others in your State, or indeed in the tropics? (I should use Rico's map!)
I would imagine your mud to be very high in clay and inert volcanic material, very different from our mud here, and possibly similar in some regards to the laterite found in Australia. They have good mud there too because of the chemical composition involved does preclude available nutrients to the plants.
I believe these are the very plants Ivan Snyder used as one half of his now famous CA x HI cross (which should be Registered as a Cultivar since everyone from here to Oz is growing the thing!).
This doesn't let you off the hook for a visit from me someday though. It was a nice account, and now that you know where it is, well, you can haul me along!
Please?
Tell you what: I'll send you my cat as an inducement, or what is left of him after the other trades and.....experiments......deal?
BTW, I may have sent you the same seed twice. I am in the middle of a ton of things right now, so if I did, pass it on or sow a lot!
Aloha, and happy growing!