说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 句库 -> 裸子蕨科
1.
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
2.
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。
3.
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。
4.
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;
5.
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。
6.
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。
7.
type genus of the Marattiaceae: ferns having the sporangia fused together in two rows.
马蹄蕨科的模式属;孢子囊排成两列的蕨类植物。
8.
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。
9.
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。
10.
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。
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.
any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori.
孢子外覆有盾形罩套的鱗毛蕨科或水龙骨科的蕨类植物。
13.
Classification and Spore Morphology of the Hymenophyllaceae from China;
中国膜蕨科植物分类及孢子形态研究
14.
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
15.
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。
16.
1 species: sensitive fern; in some classifications included in Polypodiaceae.
一个种;球子蕨;在一些分类中,包括在水龙骨科内。
17.
STUDIES ON THE DEVELOPMENT OF GAMETOPHYTES OF FERNS FROM NORTH-EAST CHINA Ⅱ.SELAGINELLACEAE
东北蕨类植物配子体发育的研究 Ⅱ.卷柏科
18.
First Recognition of the Genus Crypsinus(Polypodiaceae) in China
隐子蕨属(水龙骨科)植物在中国的首次承认(英文)