Gymnosperms have evolved seed production, something that was not present in more primitve plant groups (such as ferns and mosses). However, they have not evolved flowers. The name "gymnosperm" literally translates to "naked seed". They represent an important evolutionary transition between spore plants and flowering plants. Although explosive speciation of plants truly began in angiosperms, the persistence of many gymnosperm species to this day proves they still have a valuable and stable ecological role.
There are four major clades of gymnosperms recognized
Name | Common Name/Examples | Notable feature(s) | Botany | Photo |
---|---|---|---|---|
Cycadophyta | Cycad | WIP | WIP | Source |
Gingkophyta | Gingko | Fan-shaped leaves with spreading venation | WIP | Source |
Pinophyta | Conifers Pine Cypress | Reproductive structure a cone Leaves often highly reduced and needle-like | WIP | Source |
Gnetophyta | Ephedra Weltwischia Gnetaceae | Sort of an "odd-ball" clade that encompasses gymnosperms that do not fit into the other 3 clades | Believed to be closest to angiosperms | Source |