Pulse type classification

1. Veins can be divided into forked veins and reticular veins.

2. Bifurcated veins: After the veins grow from the leaf base, they all branch binomially, which is called bifurcated veins. This is a more primitive type, which is rare in seed plants, such as Ginkgo biloba, but more common in ferns.

3. Reticular veins: There are obvious main veins, which are branched step by step to form reticular veins called reticular veins. There are obvious main veins, lateral veins and autonomic veins on both sides, which are arranged in a feather shape and have several leaf edges, which are called pinnate reticular veins.