Original: Several other species, especially from the high plateau and mountains of central Tasmania such as Eucalyptus coccifera, Eucalyptus subcrenulata, and Eucalyptus gunnii, have produced extreme cold-hardy forms and it is seed procured from these genetically hardy strains that are planted for ornament in colder parts of the world.
Simplified: Several other kinds, especially from the high plateau and mountains of central Tasmania, have produced extreme cold-hardy forms. It is seed from these hardy strains that are planted for ornamental trees in colder parts of the world.