松柏纲纲

Conifers are a group of vascular plants and a subset of gymnosperms. They are woody trees and shrubs, mostly evergreen with a regular branching pattern, reproducing with male and female cones, usually on the same tree. They are wind-pollinated and the seeds are usually dispersed by the wind. Taxonomically, they make up the division Pinophyta, also known as Coniferae. All extant conifers, except for the gnetophytes, are perennials with secondary growth. There are over 600 living species.