Lesson plan 12 - Hµ Thu Hoµ - Chieng Sinh Upper Secondary School Eucalyptus Tree This snow gum sits atop Mount Spectacular in Victoria, Australia. Eucalyptus species are some of the most important trees in western Australian forests. In addition to their importance to the lumber industry, extracts from their bark are used in the manufacture of various dyes and drugs. Many species of eucalyptus are called gum trees for the resin that oozes from them. Cactus Date Palm Cultivated in arid, hot regions, the common date palm, Phoenix dactylifera, is valued for its fruit, the date, which is considered a symbol of wealth as well as an important food source. Frilled Lizard Lesson plan 12 - Hµ Thu Hoµ - Chieng Sinh Upper Secondary School . from their bark are used in the manufacture of various dyes and drugs. Many species of eucalyptus are called gum trees for the resin that oozes from them date, which is considered a symbol of wealth as well as an important food source. Frilled Lizard Lesson plan 12 - Hµ Thu Hoµ - Chieng Sinh Upper Secondary