1.
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。
2.
any plant or fossil of the genus Psilophyton.
裸蕨属的一种植物或化石。
3.
green plant having a vascular system: ferns, gymnosperms, angiosperms.
有脉管系统的绿色植物：蕨类植物，裸子植物，被子植物。
4.
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。
5.
fossil gymnospermous trees or climbing plants from the Devonian: seed ferns.
裸子植物化石树或攀缘植物，起源于泥盆纪；种子蕨。
6.
any of several ferns of the genus Blechnum.
乌毛蕨属的蕨类植物。
7.
any of various ferns of the genus Dryopteris.
鳞毛蕨属的蕨类植物。
8.
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。
9.
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;
10.
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。
11.
used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales.
用于某些分类系统中；一个灭绝的裸子植物化石群，与苏铁蕨目同域。
12.
families of ferns and fern allies.
蕨类植物科和蕨类植物的同类植物。
13.
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。
14.
extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies.
生活于石炭纪至侏罗纪的大部分时间的现已灭绝的裸子植物；种子蕨及同源植物。
15.
experimental biology of fer
实验蕨类植物生物学
16.
a spray of ornamental fern
蕨类植物的枝状饰物.
17.
A multicellular, often flask - shaped, egg - producing organ occurring in mosses, ferns, and most gymnosperms.
藏卵器在苔藓、蕨类及大多数裸子植物中的多细胞的，常为烧瓶状的产生卵子的器官
18.
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。