The observation on the microstructure of six orchids demonstrated that they have the typical orchidaceous roots with velamen and thick cortical tissue.

本文对密花石斛等科植物根的显微结构进行了比较观。

The geographic distribution and floristic characteristic of Magnoliaceous 7 genera and 23 species in Jiangxi are studied in this paper.

摘要对江西木科植物7属23的地理区系特征进行了析。

Abstract : Orchidaceae is one of the largest families of monocot plants.

摘要 ： 科植物为单子叶植物中最大的一个科。