Kelp is a large perennial edible algae, and the spores of plants are relatively large and flat and banded. It is divided into three parts: blade, handle and fixator, and the fixator is in the shape of false root. The leaves are composed of epidermis, cortex and pith tissues, and there are sporangia in the lower part of the leaves. Kelp is a nutritious and important marine resource.
Undaria pinnatifida belongs to Phaeophyta, Phaeophyta, laminariales, Phaeophyceae and Undaria, which is an annual plant of seaweed. Undaria pinnatifida is named after its pinnate lobes, thinner leaves than kelp, and looks like a banana leaf fan and also like Undaria pinnatifida. Undaria pinnatifida is a temperate seaweed, which can tolerate higher water temperature.
Carrageenan is an algae plant. Carrageenan is a perennial herb and a common seaweed. Carrageenan often grows in high mountains and snow. It is not afraid of cold and will not rot and deteriorate, so it has high nutritional value.
Myriophyllum is a plant of Myriophyllum in the family Erxianaceae, which is a stout perennial submerged macrophyte. Myriophyllum is suitable for indoor water greening and is a good material for decorating glass containers. If cultivated in an aquarium, it can be used as medium or background grass.