1. Different appearance

The stem of Herba Pennisetum is thin and long, and the leaves are in the shape of a round shield. The back is covered with dense T-shaped fluff, which is attached to the whole edge. However, its leaves are small, the vein is shallow and cracked, and it will give off the smell of celery when kneaded by hand. Yellow and green flowers will bloom in summer and autumn

Mirror grass is a kind of perennial succulent herb. Its leaves are dark green, full and shiny, round and fat. It is very popular. There is a golden round dot at the junction with the petiole. The leaf veins naturally spread radially from the center to all around. Looking from a distance, it looks like an ancient mirror

2. Different growth environment

Pennisetum likes humid environment. It can survive on both land and water. It mostly grows in wetlands or artificial aquariums. It is not suitable for growing in direct sunlight. It can meet its demand for sunlight in semi sunshine or shade

Mirror grass is suitable for growing in a warm and humid environment. It likes loose, well drained loam rich in organic matter. It can only live in the soil in the semi shade, unlike copper coin grass, both aquatic and terrestrial. Its growth room temperature is between 16 and 20 degrees Celsius. If it is lower than minus 4 degrees Celsius, it will suffer from chilling injury

3. Different value

It is non-toxic. The whole leaf can be used as medicine. It has the effects of removing fire and diuresis, clearing away heat and detoxification, detumescence and so on. It can also be used for damp heat jaundice, heatstroke diarrhea, sand drenching and blood drenching, carbuncle swelling and sore poison, traumatic injury and other diseases

Mirror grass can not only be used as ornamental flowers, but also has high medicinal value. Its nature is "sweet and bitter" and "cool". It can be used as a raw material for clearing heat and detoxification, removing blood stasis and swelling. It is mainly used for erysipelas and is also significantly helpful for the recovery of fractures