1. Edible bracken includes Lycopodium, Vitex negundo, Pteridium, Equisetum, Dryopteris, Dryopteris, Flammulina velutipes, Dryopteris, etc. People will be poisoned if they eat by mistake. Edible Pteridium aquilinum, such as Dryopteris squamosa, Pteridophyta, Osmunda japonica, Pteridium aquilinum, Pteridophyta, etc., is not suitable for people with spleen and stomach deficiency and cold.

2. Pteridium aquilinum is a general term for Pteridium aquilinum, Pteridium tataricum, Pteridium southwest and Pteridium aquilinum. Among them, the inedible varieties of Pteridium aquilinum include Pteridium aquilinum, Vitex negundo, Pteridium aquilinum, Equisetum equisetum, Pteris pubescens, Pteris Pteris, Pteris Pteris and so on. These bracken contain certain toxicity, and people will be poisoned if they eat it.