采用野外调查和资料研究方法，对河南安息香属植物进行了研究。

Styrax in Henan Province were studied by field investigation and data analysis.

youdao

目的：对九里香属9 种植物叶表面的微细特征进行了比较观察，并给出了分种检索表。

Objective:To Observe the morphological characteristics of the leaf epidermis of 9 Chinese species of genus Murraya and prepare and index for their differentiation.

youdao

本研究通过野外调查，了解了中国秤锤树属与长果安息香属植物的地理分布、濒危现状及其迁地保护状况。

We conducted an extensive field survey of current geographic distribution of their natural range, and in situ and ex situ conservation status of the remnant populations of the two genera.

youdao