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The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.
结果表明，松阳蕨类植物共有38科72属161种7变种；优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科，优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属；科的分布以世界分布和泛热带分布为主，属的分布以泛热带分布为最多，种以东亚分布类型为主，特别是中国—日本分布类型最多，表现出亚热带向暖温带过渡的特点；本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北；与邻近的6个山地蕨类植物区系的亲缘关系密切，可以划为同一自然区；与国内11山地蕨类植物区系相比，松阳的蕨类植物丰富程度不高；松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物，有较高的保护价值。
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Small genus of Mexican cycads; sometimes classified in family Cycadaceae.
一种小的墨西哥苏铁；有时被放入凤尾松科。
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Cycas：凤尾蕉属
但凤尾蕉属(Cycas)的大孢子叶丛生而不形成孢子叶毬. 雌雄同株(如松)或异株(如凤尾蕉、银杏、桧、粗榧、红豆杉、罗汉松). 小孢子叶下著生小孢子囊(花粉囊). 大孢子叶常变为珠鳞,上表面有裸露的胚珠,下面常有盖鳞.
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Cycas：铁树,苏铁,凤尾松
cycadophyte | 苏铁亚纲植物 | cycas | 铁树,苏铁,凤尾松 | cycasin | 苏铁素,苏铁苷
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Cyrtomium：貫眾蕨屬
Wen,为台湾增添一新纪录种.详细订正资讯如表四.表四,五加科刺葱属(Aralia)之订正标本鳞毛蕨科贯众蕨属(Cyrtomium)订正日本筑波自然科学博物馆松本定博士,於今年三月来馆查阅贯众蕨属(Cyrtomium)及凤尾蕨属(Pteris)标本.松本博士主要以细胞学方法研究蕨类分类学的问题,
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Cycas：铁树,苏铁,凤尾松
cycadophyte || 苏铁亚纲植物 | cycas || 铁树,苏铁,凤尾松 | cycasin || 苏铁素,苏铁苷