蕨类植物

The fern Adiantum capillus-veneris has an unconventional photoreceptor, phytochrome 3 (phy3), which is a chimaera of the red/far-red light receptor phytochrome and phototropin.

光敏色素-3的生成，可能是在第三纪和侏罗纪之间致密森林出现时使得蕨类植物能够适应黑暗环境的一个关键演化步骤。

From "Adirondack High," June 1998, National Geographic magazine

高峰上的蕨类植物，纽约，1996

Such rare ferns as Alsophila spinulosa are growing in Mount Xiaoheishan nature reserve at the provincial level.

小黑山省级自然保护区生长着珍稀蕨类植物桫椤。

It indicated evidently tropical floristic remnant and affinity in the Alsophila spinulosa community. Comparing with the fossil flora from late Cretaceous and Tertiary (i.e. Northeast China flora, Fushun flora in Liaoning, Jinggu flora in Yunnan and Shanwang in Shandong) in China, pteridophyte flora of the Reserve was quite similar to that of late Cretaceous. Nevertheless, its spermatophyte flora was little similar to that of Tertiary, where angiosperm were booming in that period.

将之与中国晚白垩纪和新生代第三纪中国东北、辽宁抚顺、云南景谷、山东山旺化石植物类群相比，发现桫椤群落中蕨类植物成分与其晚白垩纪化石植物群有着高度的相似性，而其种子植物组成与其后兴起的第三纪被子化石群不甚相似。

The 9 species belong to 4 taxa, pteridophyta (Dicranopteris dichotoma and Alsophila spinulosa), gymnosperm (Cycas panzhihuaensis, Metasequoia glyptostroboides, Cunninghamia lanceolata and Pinus massoniana), dicotyledon (Schima superba and Cyclobalanopsis glauca), monocotyledon, which are ranked in the order of the origin time from earlier to later.

所选的9种植物分属于4个类群，按起源时间由早到晚依次为蕨类植物、裸子植物（苏铁、水杉、杉木和马尾松）、双子叶植物及单子叶植物。

In the fern allies, there was no obviously evolutional trend among the mycotrophic, facultative mycotrophic and autotrophic, however, the evolutionary trend may be from the mycotrophic to facultative mycotrophic, and at last to the autotrophic which got rid of mycotrophism in the filicophytes

在拟蕨类植物中，VA菌根营养、兼性菌根营养和自养之间无明显的进化趋势；而在真蕨类植物中，则由VA菌根营养向着兼性菌根营养到最后摆脱菌根营养而行自养的方向演化

Pteridophytes have a longer evolutionary history and have endured greater losses of phylogenetical information than spermatophytes. Therefore, reconstructing the evolutionary history of pteridophytes has been a challenge to systematists.

蕨类植物是一群非常古老的植物，在其漫长的演化历史中丢失了大量的系统发生信息，因此重建其系统演化关系是蕨类植物学家所面临的重要任务之一。

On the basis of wild investigation and data analysis, the composition and distribution types of pteridophytic flora in Songyang,Zhejiang are analyzed and a comparison is made between adjacent regions and upland pteridophytic flora, which shows that the pteridophytic flora in Songyang,Zhejiang is composed of 161 species and 7 varieties,72 genera and 38 families.

在野外调查和整理资料的基础上，分析了松阳蕨类植物区系的组成和分布区类型，并与邻近地区山地蕨类植物区系进行了比较分析。

The rare African amber also preserved bacteria, fungi, and plant remains from the Cretaceous period forest, such as this star-shaped hair from a fern species that sapped nutrients from the trees on which it grew.

罕见的非洲琥珀里还保存了来自白垩纪的细菌和植物残骸，例如这个蕨类植物的星状毛发，蕨类植物从其生长的树上获取营养物。

According to their application, they are classified into 4 categories including landscaping, potted landscape, cut-flower and pot culture.

摘 要：对闽西梅花山国家级自然保护区的观赏蕨类植物资源进行调查，发现具有观赏价值的野生蕨类植物29科48属68种。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。