The carpel is homologous with the megasporophylls of certain spore - bearing vascular plants ( pteridophytes ) and the ovuliferous scales of gymnosperms 心皮和能产生孢子的维管植物（羊齿类）还有具胚珠的裸子植物的大孢子叶是同源的。
Finally , this research , further enriched the contents of the our country namurian age flora , as to it ' s characteristic we have a deeper cognition 同时也对网羊齿、脉羊齿类的迁移方向进行了验证。最后阐明了当前植物群的研究意义。
Mary hartman , mary hartman , ep . 1 ( 1 / 76 ) . mary has to worry about waxy yellow buildup , a husband with a gun fixation , a mass murder , and a flasher in fernwood 《玛丽?哈特曼》 ，第1幕（ 1976年1月） 。玛丽不得不为蜡似的黄色结块、有枪支癖的丈夫、连环杀手和羊齿林中的暴露狂感到担忧。
Moreover , if we take a closer look of a tiny frond of a fern plant , we may be amazed at its resemblance to the entire plant . this is related to fractals self - similarity in mathematics 此外，如果我们拿一棵羊齿植物局部放大，就会发现它的形态与整棵植物竟然十分相似，这与数学上的分形概念不谋而合。
