Isoetids are

aquatic plant Aquatic plants, also referred to as hydrophytes, are vascular plants and Non-vascular plant, non-vascular plants that have adapted to live in aquatic ecosystem, aquatic environments (marine ecosystem, saltwater or freshwater ecosystem, freshwater ...

s or

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

plants named for their superficial similarity to the quillworts, ''

Isoetes ''Isoetes'', commonly known as the quillworts, is a genus of lycopod. It is the only living genus in the family Isoetaceae and order Isoetales. , there were about 200 recognized species, with a cosmopolitan distribution mostly in aquatic habitats ...

''. They occur in wetlands and on shorelines with low nutrient availability. Owing to their slow growth rates, they are also often found in areas with low rates of sediment deposition. Many have evergreen leaves, and

CAM Cam or CAM may refer to: Science and technology * Cam (mechanism), a mechanical linkage which translates motion * Camshaft, a shaft with a cam * Camera or webcam, a device that records images or video In computing * Computer-aided manufacturin ...

photosynthesis.Boston, H. L. (1986). A discussion of the adaptation for carbon acquisition in relation to the growth strategy of aquatic isoetids. ''Aquatic Botany'', 26, 259–70. Often they are exposed during periods of low water. Common examples include ''

Lobelia dortmanna ''Lobelia dortmanna'', Dortmann's cardinalflower or water lobelia, is a species of flowering plant in the bellflower family Campanulaceae. This stoloniferous herbaceous perennial aquatic plant with basal leaf-rosettes and flower stalks grows to ...

'' and ''

Eriocaulon ''Eriocaulon'' is a genus of about 400 species of monocotyledonous flowering plants in the family Eriocaulaceae, commonly known as pipeworts. Etymology The scientific name is derived from Ancient Greek ἔριον, , meaning 'wool', and καυλ ...

aquaticum''.

References

{{Reflist Aquatic plants