Adaptation to special environments make some of the species only able to live in certain areas. The Kanehira azalea grows only by the Peishih River, and Rhododendron hyperythrum only around Mt. Nanhu. But these special environments are also what created Taiwan's 10 endemic species (species unique to Taiwan).
特殊的環境，也讓花兒只在固定領域展現生機，烏來杜鵑只依戀於北勢溪兩岸；南湖杜鵑只集中南湖山區，但也成就了只見於台灣的十種特有杜鵑。