morphea

例句：

1. 1. The morphea on the rocks is a beautiful shade of green.
   岩石上的苔藓是美丽的绿色。
2. 2. The morphea grows on the forest floor and helps to protect the soil from erosion.
   地衣生长在森林地面上，有助于保护土壤免受侵蚀。
3. 3. The morphea was used by ancient peoples as a source of medicine and food.
   地衣被古代人用作药物和食物来源。