pteridophytes

It may be a modern centre of differentiation for pteridophytes . Various natural environments accelerate local ferns' evolution.
海南岛是现代蕨类发育的一个中心，多样的环境条件促成了蕨类植物的演化。
The floristic features of pteridophytes showed the obvious tropical geographical and rich north temperate elements.
The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship.
与邻近的6个山地蕨类植物区系的亲缘关系密切，可以划为同一自然区；
The phytogeographical distribution and floristic characteristics of pteridophytes of Gansu Province.
Different opinions on the origins and evolutions of pteridophytes and gymnosperms.
The floristic composition of pteridophytes in Anshun, Guizhou.
Of pteridophytes of 446 species (including varieties and forms) and 118 genera in 48 families were recorded from this region up to now.
报道了哀牢山国家级自然保护区蕨类区系有蕨类植物48科、118属、446种（包括变种和变型）。
An investigation on the pteridophytes of three scenic spots in the west of Hunan.
湘西张家界等三个风景区蕨类植物的初步调查研究。
It was shown that there are 247 species (including varieties and forms), 76 genera and 34 families of pteridophytes in Dabashan Mountain.
结果表明，大巴山具有蕨类植物34科76属247种（包含变种和变型）。