水龙骨科

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。

One of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum; Doodia; Sadleria; Stenochlaena; Woodwardia.

在某些分类系统中细分的水龙骨科成员的一个科；乌毛蕨属；水龙骨属；狗脊属。

Coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae.

同延于水蕨属；有时包括在水龙骨科。

Any of numerous usually tropical ferns having a woody trunklike stem or caudex and crown of large fronds; especially Australia and New Zealand; chiefly of the families Cyatheaceae and Marattiaceae but some from Polypodiaceae.

茎或大复叶的花冠如树干的一种热带蕨类；尤其常见于澳洲和新西兰；主要属于桫椤科和观音座莲舅科，也有部分属于水龙骨科。

One of a number of families into which Polypodiaceae has been subdivided in some classification systems; includes genera Araiostegia; Davallia; Davallodes; Gymnogrammitis; Humata; Leucostegia; Scyphularia; Trogostolon.

水龙骨科在某些分类系统中被细分为若干科的一科；骨碎补属。

The traditional Chinese medicine: Gusuibu Drynaria fortunei J.

中文摘要骨碎补为水龙骨科槲蕨（Drynaria fortunei J。

Small genus sometimes included in genus Onoclea; in some classifications both genera are placed in Polypodiaceae.

有时包括在球子蕨属内的一个小属；在一些分类中，这两类都归入水龙骨科。

In some classification systems placed in family Polypodiaceae.

在一些分类系统中归入水龙骨科。

One of a number of families into which Polypodiaceae has been subdivided in some classification systems: genus Vittaria.

在某些分类系统中细分的水龙骨科成员的一个科；书带蕨属。

One of a number of families into which the family Polypodiaceae has been subdivided in some classification systems .

水龙骨科在某些分类系统中被细分为若干科的一科。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。