China has the world's most ancient tree species -- metasequoia.
中国有世界最古老的树种 -- 水杉.
Hundreds of tree species face extinction.
许许多多树种濒临灭绝。
Cupressaceae and Taxodiaceae produce their flowers terminally on the branches.
柏科和杉科树种是在枝条顶端开花的.
Likewise, certain angiosperms, for example, some Eucalyptus species, will present few seed harvesting problems.
同样某些阔叶树种, 例如一些桉树类, 采种的问题不多.
Some trees, such as junipers , cherries, and hawthorns, produce fruits that are eaten by birds.
有些树种如桧柏 、 樱桃和山楂结出能被鸟类吞食的浆果.
Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos.
许多林木树种都有颈卵器, 受精以后便产生许多原胚.
The release of winged - seed from Acer and Fraxinus species, can be encouraged by shakers.
对于槭属和梣属等种子有翅的树种, 可以用摇树机摇落.
For the majority of tree species this method appears to be very well suited.
对于大多数树种来说,这个方法看来都是适合的.
The beeches, oaks and chestnuts all belong to the same family.
山毛榉树 、 橡树和栗子树属于同科树种.
Dehong in the banyan tree in all the stations in the largest.
在德宏榕树在所有树种中站的比重最大.
Some exotic tree species died and its crown was withered.
一些外来树种发生了树冠干枯和植株枯死.
And that of broadleaf tree specieswere occupied 13 % and 15 % respectively.
阔叶树种(黄栌、火炬树)则分别占全天和白天的13%和14%.
Fall - color trees are important ornamental elements in the exhibition of seasonal variation.
秋色叶树种是表现秋季景观的重要造景材料.
South American tree having fruIt'similar to the true guava.
南美树种,果实类似于番石榴.
The key techniques are selecting trees and arranging structure of species.
其关键技术是树种的选择和结构配置.