The results of variance analysis showed the variant extent of above 5 morphologic characters was plant height> crown breadth > sporophyll number > leaf number > leaf breadth in turn.

• 方差分析结果表明：5个形态指标在种群间的差异程度依次为株高＞冠幅＞孢子叶数＞叶数＞叶宽。