铁线蕨属

In Pteridaceae s. l., false veins can be found in Pteris, Adiantum, and vittarioids; in this thesis, Energy Dispersive X-ray element analysis and histochemical studies were used to confirm the false veins of these three taxa are composed of spicular cells – a kind of long, silica depositing epidermal idioblast.

於广义的凤尾蕨科中，假脉可见於凤尾蕨属、铁线蕨属以及书带蕨类群；本论文利用能量色散X光光谱仪元素分析，配合组织化学染色的结果，证实此三类群的假脉均是由具二氧化矽堆积的矽异形细胞(spicular cell， SC)所构成。

The results of character evolution history reconstruction shows the SC in PT and AD clade might be a homoplasy character; also, the SC in PT clade might have multiple origins. SC in Pteridaceae has some special characteristics:(1) the cell long axes usually run parallel to the lateral veins;(2) Most of Pteris and Adianum species have VSC only in lower epidermis;(3) Species have ISC also have VSC.(4) Presence of spicular cells is highly correlated with the long veinal epidermal cells. Species have type III silica deposition type usually have longer and narrower veinal epidermal cell compared with ordinary epidermal cells; Species have type IV silica deposition type also have long epidermal cells, but not significantly different from ordinary epidermal cells.

本实验中亦发现凤尾蕨科之矽异形细胞具有几项特色：(1)矽异形细胞之长轴多与叶片侧脉方向平行(2)发现多数铁线蕨属以及凤尾蕨属植物仅下表皮具有脉上矽异形细胞；(3)具有脉间矽异形细胞的种类会同时具有脉上矽异形细胞；(4)长条形的侧脉上表皮细胞与矽异形细胞具有相关性，仅具脉上矽异形细胞的分类群之脉上表皮细胞均较一般表皮细胞细长；具有脉间矽异形细胞之物种之脉上表皮细胞亦为长条形但形态与一般表皮细胞常无明显形态差异。

Cosmopolitan genus of ferns: maidenhair ferns; in some classification systems placed in family Polypodiaceae or Adiantaceae.

一个分布在世界各地的蕨类植物属；掌叶铁线蕨或铁线蕨；在一些分类系统种归入水龙骨科或铁线蕨科。

Drought brake is belonged to and broken rice brake are belonged to also belongs to subfamily of iron line brake, grow on much petrosal cliff commonly or on cay.

旱蕨属和碎米蕨属亦属铁线蕨亚科，一般生长在多岩石的悬崖上或岩礁上。

Genus of chiefly small rock-loving ferns; in some classifican systems placed in family Polypodiaceae or Adiantaceae.

一个主要生长在岩石上的小的蕨类植物属；在一些分类系统中归于水龙骨科或铁线蕨科。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。