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

摘要 ： 兰植物为单子叶植物中最个。

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

摘要对江西木兰植物7属23种地理分布特征进行了分析。

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

本文对密花石斛等六种兰植物根显微结构进行了比较观察。