Discusses molecular data, species, hybrids, geographic links, and definitions.

Shows images of members of this plant group.

Describes this group of homosporous vascular plants comprising a single genus with about 15 species. With images and links.

Provides information on this spore-bearing group of vascular plants that are also called Equisetophyta.

Describes the characteristics of this plant division. Includes scientific classification and species.

Describes this species of plants with jointed stems and distinctive nodes. With image and links.

Presents a brief description of this plant group, including descriptions of several Equisetum species.

Report covers the taxonomy and nomenclature of member species.

Details the California elements of this phylum. With images.