The names cephalotusin, dionaeasin and droserasin have been proposed for similar aspartic endopeptidases originating from the carnivorous plant genera Cephalotus, Dionaea and Drosera, respectively.
The final volume includes the remaining sundews of Australia, together with native species of Aldrovanda, Byblis, Cephalotus, Nepenthes, and Utricularia.
According to Allan Cunningham it appeared from a sod of earth containing a Cephalotus, collected by Phillip Parker King from same location, and flowered to provide the source of the illustration by Franz Bauer.