1, large perennial plants: tropical and subtropical regions are usually rich in large perennial plants, such as tall trees, shrubs, vines and so on.
2. Big leaves and wide leaves: Due to the humid climate and abundant precipitation, tropical and subtropical plants usually have big leaves and wide leaves to better accept sunlight and moisture.
3. Thick skin-like leaves: In order to adapt to high temperature and high humidity, the leaves of some tropical and subtropical plants will thicken and form a skin-like layer to reduce water evaporation.
4. Complex and rich crowns: Due to the competition among plants and sufficient sunshine, trees of tropical and subtropical plants often have complex and rich crowns, forming dense forests.
5. Air roots and epiphytes: Some tropical and subtropical plants absorb water and nutrients from the air through air roots, or grow in an epiphytic way, independent of soil.
6. Diversity and richness: The tropical and subtropical regions have high species diversity and a wide variety of plants, including all kinds of trees, herbs, ferns and flowers.