1. Ferns: These are ancient plants that reproduce through spores instead of seeds. They are often found in moist, shady environments.

2. Mosses: Another type of non-vascular plant that reproduces using spores. Mosses often grow in dense mats on damp surfaces.

3. Liverworts: These are small, non-vascular plants that are closely related to mosses. They typically grow in moist, shady environments.

4. Horsetails: These are primitive plants with hollow, jointed stems. They reproduce through spores and are often found in damp areas.

5. Clubmosses: These are small, evergreen plants that resemble miniature pine trees. They reproduce through spores.

6. Algae: This vast group of aquatic organisms, including seaweed, reproduce through spores and don't have seeds. They can be found in a wide variety of water environments.