royal fern

同根派生

Eusporangiate ferns include the adderstongues (Ophiogossales), Marattiales, and royal ferns (Osmundales), which are to some extent intermediate between leptosporangiate and eusporangiate ferns.
厚囊蕨包括蛇舌蕨(箭蕨ophioglossales)，蓮座蕨目以及在某種程度上介於薄囊蕨和厚囊蕨之間的皇家蕨（紫萁目osmundales）。
The royal palace was filled with intrigue.
皇宮中充滿了勾心鬭角。
An area overgrown with this fern.
歐洲蕨林被這種蕨覆蓋的地帶
The trunk of a palm or tree fern.
棕櫚樹或樹蕨的樹乾
This document carries the royal seal.
這份文件上蓋有王室印章。