👉 Polytrichaceous is a scientific term that refers to a type of plant that has a thick, hard outer layer known as the "polytheca" and several thin inner layers. This type of plant is typically found in a variety of environments, including wetlands, forests, and deserts. The polytheca on these plants is often composed of various types of cells or tissues, such as trichomes (a type of cell that contains oil) and spines (a type of
