1.
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。
2.
Studies on Phylogeny of Triblemma (Athyriaceae);
单叶双盖蕨属（蹄盖蕨科）的分类学研究
3.
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。
4.
a family of ferns belonging to the order Lycopodiales.
属于石松属的蕨类植物一科。
5.
constituting the order Marattiales: chiefly tropical eusporangiate ferns with gigantic fronds.
组成了马蹄蕨属；主要是热带厚囊蕨的一科带有巨叶。
6.
any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves.
苏铁科热带植物；长有蕨类叶片，树干无枝。
7.
Epidemic morphology characters of Angiopteridaceae from Yunnan
云南莲座蕨科植物叶表皮形态特征研究
8.
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。
9.
pantropical epiphytic or terrestrial whisk fern with usually dull yellow branches and minute leaves; America; Japan; Australia.
遍布于热带的长有浅黄色叶柄和细小叶片的石生或陆生松叶蕨；见于美洲；见于日本；见于澳洲。
10.
A narrow stiff leaf, as those of conifers.
针叶狭长的硬叶，如松柏科植物
11.
small family of lower ferns having nearly naked stems and minute scalelike leaves.
低等蕨类植物小科具有接近赤裸的茎和微小的鳞状的叶。
12.
in some classification systems placed in family Cyatheaceae: ornamental tree ferns with coarse gracefully drooping fronds.
在一些分类中归入桫椤科；观赏树蕨，叶下垂，粗糙而优美。
13.
fossil plants characterized by conspicuous spirally arranged leaf scars on the trunk.
化石蕨类植物的一科，是以茎上显著呈螺旋排列的叶座为特征。
14.
eusporangiate ferns of the families Ophioglossaceae and Marattiaceae.
属于瓶尔小草科和合囊蕨科的厚囊蕨。
15.
the ferny shadows of locust leaves.
刺槐树叶子的蕨状影子。
16.
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
17.
families of ferns and fern allies.
蕨类植物科和蕨类植物的同类植物。
18.
The study of ferns.
蕨类植物学研究蕨类的科学