苏铁类

These characteristics have important significance to research on plant anatomy, cycad biology and cycad conservation.

这些对于植物解剖学和苏铁类植物生物学研究及保护等均具重要意义。

An attractive fern, at first glance it looks like a plant of Cycad and it is very suitable for cultivation as bonsai.

本种主干直立，羽叶婆娑，极似苏铁类植物，具有重要的观赏价值，适合作盆景。

The kinship between the sporopollen assemblages and vegetation types reflects that the Early Jurassic consist mainly of herbaceous Filicinae and arbor, Coniferales and ginkgo belonged to bush and cycad indicative of subtropical climate.

孢粉组分与母本植物的亲缘关系研究表明，准噶尔盆地中央坳陷早侏罗世植被主要由草本的真蕨植物和乔木、灌木的松柏类及银杏、苏铁类等组成，所反映古气候应属亚热带气候。

Based on new materials, author thinks that Plagiozmites may be a primitive cycads, and may does be the Procycads; Compsopteris, at least the species found in China, is not belong to the seed fern plant, but also belong to the marattiaceae plant of fern.

首次报导了斜羽叶，蕉羊齿的内部解剖特征，根据新的材料，提出斜羽叶为原始的苏铁类植物，很可能为始苏铁；蕉羊齿，至少是中国发现的一些种，不是种子蕨植物，而是真蕨类的观音座莲科植物。

As a result of analysis to many of the results of experiment, checked up on specimens, field investigation and combining with the theories of palaeobotany, comparative morphology, evolutional morphology of vascular plants and taxonomy, it can be concluded as following: the primitive sorts of Cycadaceae are the sorts that pinnate leafs are dichotomy; among these, the sort that pinnate leafs are tripinnate-dichotomy is most primitive, from this sort gradually evolve to bipinnate-dichotomy, to only for monopinnate-dichotomy, from this sort evolve to the sorts that pinnate leafs are simply pinna; among the sorts of simply pinna, the species that segments of megasporophyll possess much more triplicate to monodichotomy are most primitive.

经过大量的实验结果分析、查阅标本和野外调查，结合古植物学、比较形态学、演化植物学和分类学等理论进行分析，认为苏铁科原始的类型为羽叶呈二歧状分叉的种类，其中最原始的又是羽叶呈三回二歧状分叉的种类，从这个羽叶类型逐渐演化出一回二歧状分叉的羽叶类型，再演化出羽叶为单羽状的类型；而单羽状叶的类群中，又以大孢子叶侧裂片具三回、二回及一回二歧状分叉数量多的种类为最原始，而侧裂片二歧状分叉数量少的为较进化，侧裂片无二歧分叉的如拳叶苏铁类为最进化的种类。

Coralloid roots A type of root regularly produced by cycads, which contains symbiotic nitrogen-fixing cyanobacteria in root nodules, giving the roots a knobbly coral-like appearance.

珊瑚状的根：由苏铁类植物产生的一种类型的根，根瘤中含有共生的固氮蓝细菌，使根形成珊瑚状的有节的形状。

A family of cycads often included in the family Cycadaceae: zamias.

苏铁类的一科常常包括在苏铁科；泽米属植物。

The tissues of leaf of Cycas taiwaniana,Bowenia serrulata and Dioon eduleand tissue of root of Macrozamia longispina of cycads,and leaves of Michelia alba and Amygdalus persicaof angiosperm were observed by scanning electron microscope.

对苏铁属的台湾苏铁、波温铁属的细齿波温铁、双子铁属的双子铁叶的羽片，大泽米铁属长刺大泽米铁的根，以及被子植物的白兰和桃的叶组织进行了电子扫描显微镜的观察研究，结果表明，2个科4个属苏铁植物的导管类型是丰富的，导管的结构组成方式、发育过程与被子植物是一致的；例如导管端壁倾斜度等结构特征显示，一些被子植物导管的结构比苏铁类植物的要原始。

Since the discovery of their flagellated spermatozoids by Hirase and Ikeno, the general mor- phology and anatomy,the life cycle and the systematic evolution of Ginkgo and cycads have been described in many reports.

自1896年Hirase和Ikeno分别发现银杏和苏铁类植物的游动精子以来，研究人员对它们的生活史、胚胎发育、系统演化等已进行了大量研究。

Discovered cycads'root system is fibrous root system,it is not taproot sysem which was widely thought in former times.

发现苏铁类植物根系为须根系。而过去均认为苏铁类植物为直根系。6。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。