1.
any plant or fossil of the genus Psilophyton.
裸蕨属的一种植物或化石。
2.
terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae.
陆生的热带蕨属，叶下面呈淡黄色或白色，粉状；有时归入水龙骨科或裸子蕨科。
3.
any of several ferns of the genus Blechnum.
乌毛蕨属的蕨类植物。
4.
any of various ferns of the genus Dryopteris.
鳞毛蕨属的蕨类植物。
5.
These plants belong to 28 families and 42 genera and include 5 species of pteridophyte,10 species of gymnospermae and 35 species of angiospetmae.
这50种植物分属28科42属,其中蕨类植物5种,裸子植物10种,被子植物35种。
6.
These plants belong respectively to 12 families and 13 genera,including 2 species of pteridophytes,1 species of gymnospermae and 10 species of angiospetmae.
这13种植物分属12科,13属,其中蕨类植物2种,裸子植物1种,被子植物10种;
7.
from 345 million to 405 million years ago; dominance of fishes and appearance of amphibians and ammonites.
保存着大量的蕨类植物,石松纲植物,木贼属和裸子植物以及大量的低级鱼类。
8.
type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia.
裸蕨科的模式属；古生代植物，为小而坚韧的草木，具地下根状茎和顶生的孢子囊群。
9.
a genus of ferns belonging to the family Pteridaceae.
属于凤尾蕨科的一个蕨类植物属。
10.
Polystichum jiucaipingense,a New Species of Dryopteridaceae from Guizhou,China
贵州产耳蕨属(鳞毛蕨科)一新种—韭菜坪耳蕨
11.
a fern of the genus Dryopteris.
鳞毛蕨属的一种蕨类植物。
12.
a genus of ferns belonging to the family Dennstaedtiaceae.
凤尾蕨科的一个蕨类植物属。
13.
eusporangiate ferns of the families Ophioglossaceae and Marattiaceae.
属于瓶尔小草科和合囊蕨科的厚囊蕨。
14.
Studies on Phylogeny of Triblemma (Athyriaceae);
单叶双盖蕨属（蹄盖蕨科）的分类学研究
15.
A Taxonomic Revision of the Fern Genus Athyrium Roth s. Str. from China
中国蹄盖蕨属（蹄盖蕨科）的分类学修订
16.
a hare's-foot fern of the genus Davallia.
骨碎补属的一种兔脚蕨。
17.
whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs.
蕨类植物；由松叶蕨科或裸蕨纲组成；无根脉管植物，叶仅部分分化或缺乏，孢子囊发育较差。
18.
Psilophyta (whisk ferns) In the Five Kingdoms classification scheme, a phylum of vascular seedless plants, the whisk ferns.
裸蕨植物门(松叶蕨)：在五界分类系统中，一门不产生种子的维管植物，松叶蕨。