蕨类植物分布很广,除沙漠外,从高山至海底、从寒带到热带都有生长,在热带与亚热带地区种群极为丰富。全世界蕨类植物有12 000种,而我国约有2 600多种,约占世界总数的20%,是世界上蕨类植物资源最丰富的地区之一。我国的华南、西南地区的蕨类植物蕴藏量较大,仅云南省就有1 000余种,被誉为“蕨类植物王国”。蕨类植物中的不少种 Ferns are widely distributed, with the exception of deserts, which grow from high mountains to the sea floor and from boreal to tropical areas, and are extremely rich in tropical and subtropical regions. There are 12,000 species of ferns in the world, and about 2,600 species in China, accounting for about 20% of the world total, are one of the most abundant fern resources in the world. The fern reserves in south China and southwestern China are quite large. There are more than 1,000 kinds of ferns in Yunnan Province alone, which are praised as the kingdom of ferns. Many species of ferns