Isoetidae
English: Quillworts; Scale trees.
Clades: Isoetopsida; Pteridophyta; Plants.
Genus: 1; ± 145 species, 1 family Isoetaceae.
Region: cosmopolitan; scarce to rare.
Taxonomy
See Isoetopsida.
Plant theory
In the Plant theory Isoetidae is placed in the Hydrogen series of the Ferns, Pteridophyta.