Premise: Mentha diemenica is known by the common name of slender mint. The species is named after Van Diemen's Land, which is now called Tasmania. It is a mint species within the genus "Mentha", native not only to Tasmania but also to Queensland, New South Wales, Victoria, and South Australia.
Hypothesis: Mentha diemenica is a mint species within the genus "Mentha", native only to Tasmania named after Van Diemen's Land.