What beautiful photography, Kass. The datura are spectacular. Perfection in a flower. But they look scary... There were tons of poisonous plants in Hawaii, too... oleander, the castor bean like yours, huge hedges of pointsettia, the beautiful crown flower, and the common plumeria that everyone had in their yards. We would make leis out of plumeria and the flowers gave off a milky discharge that was poisonous. You don't want to get fingers in your mouth after handling them... YUCK. Also angel's trumpet.
Thank you for the beautiful pictures.