兰科的

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科植物根结构进行了比较观察。

The dominant plants are sages (Lamiaceae) and evergreen oaks and, in drier areas, chamise (Adenostoma fasciculatum), manzanita (Arctostaphylos pungens), and species of Ceanothus.

优势树种有薄荷属一些树木，常绿橡树，在旱地区通常有蔷薇属灌木，石兰科常绿灌木及某些鼠李。