Grow regions & close relatives
Drosera adelae grows in Queensland, Australia; specifically Rockingham Bay, Hinchinbrook Island where it is native. Here, it usually grows in “mountain areas among rocks in sandy banks along creeks in rainforest” (Lowrie 132).
At the time of this writing in January 2019, it’s NCA (“Nature Conservation Act” of 1992) conservation status is Rare, meaning, by 2004’s amendments to more closely align with the IUCN Red List categories, “near threatened”.
Drosera adelae is closely related to Drosera prolifera and Drosera schizandra, also found in Queensland, Australia. “Cytological studies showed that each of these species is 2n=30. D. adelae, D. schizandra and D. prolifera appear to have evolved from a common ancestor” (Lowrie 132). In “The Savage Garden”, Peter D’Amato referred to them as, “Three Sisters from Queensland” and the name has stuck.