National Park Mount Bromo Tengger Semeru, located in East Java has its own characteristics which Sand Sea area of 5.250 hectares with an altitude of about 2.100 m. Sand Sea this is the caldera of an ancient volcano which is covered in sand sedimentation of volcanic activity of Mount Bromo. The resulting area is believed to desert areas like the only popular in Indonesia. There are five volcanoes in the Tengger Caldera (Alt. 2.392 m), Mount Batok (Alt. 2.470 m), Mount Kursi (Alt. 2.581 m), Mount Watangan (Alt. 2.661 m), and Mount Widodaren (Alt. 2.650 m).
Based on the height, the national park area is divided into three zones characteristic of tropical rain forest in the south Semeru, Eastern Semeru (Burno), and Western Semeru (Patok Picis), which is dominated by plants of the family Anacardiaceae, Fagaceae, Sterculiaceae, Moraceae and Rubiaceae . There are also 225 species of orchids in this area. then the second montane zone where plant life is greatly reduced in this area. Most of the species that grow in this area is kind of a pioneer. There are also some plants such as "Kemlandingan" (Albizia lophantha), pine wood (Casuarina junghuhniana), "Mentinggi" (Vaccinium varingifolium), "Acacia" (Acacia decurrens) and lower plants such as "Java or Senduro Edelweiss" (Anaphalis javanica, Anaphalis longifongila) and the third is sub-alpine zone that covers this area is "Mentinggi" (Vaccinium varingifolium) and pine wood (Casuarina junghuhniana). "Kemlandingan" (Albizia lophantha) and Java can also be found growing Edelweiss in this zone.
At Mount Semeru, there is no plant life above the height 3100 m. This zone is covered in loose sandstone. Some rare flora protected in this park, such as Fagaceae, Moraceae, Sterculiaceae, Casuarina junghuhniana and about 200 species of orchids endemic.
