蹄盖蕨科的亚科划分

蹄盖蕨科的建立对蕨类植物的分类起了很大的推动作用，然而，即使按秦仁昌的狭义概念，它仍然是一个极其复杂的大科。自秦仁昌把该科划分为21个属以后，属级水平上的分类问题比较清楚了，但亚科、亚属和组的划分至今仍不成功。本文主要根据该科三个染色体基数X=42、41和40，结合孢子囊群着生的位置及其它形态特征，将其划分为3个亚科：冷蕨亚科、蹄盖蕨亚科和双盖蕨亚科。

A SUBDIVISION OF THE FAMILY ATHYRIACEAE ALSTON

The classification of ferns has been improved by the foundation of the family Athyriaceae. But even according to Ching's strict concept, it is still a large and complex tax-on. After Ching distinguished it into 21 genera, the family has become clear at the generic level. Up to now, the subdivisions at the levels of subfamily, subgenus and section are still unsuccessful. Mainly according to the three basic chromosome numbers, X = 42,41 and 40, along with the position of sori and other morphological characters, the family is divided into three subfamilies; Cystopterioideae, Athyrioideae and Diplazioideae in the present paper.