Pinus belongs to class
Gnetopsida
Cycadopsida
Coniferopsida
Spheropsida
Coniferopsida -
1-Wood is pcynoxylic
2-Small ephemeral cones formed in groups.
3-Large and perrinial female cones.
4-Siphonogamous fertilization.
5-Male gametes non-motile.
- wherein
Eg Pinus, Taxus.
Conifers comprise of mnore than 500 living species of cone bearing gymnosperms