ISOETACEAE 

 Isoetes L. Quillwort. 



echinospora Durieu. var. Braunii (Dur.) Engelm. 

 Eatoni Dodge. 

 Gravesii A. A. Eaton. 



Engelmanni A. Br. Other forms of Isoetes exist in this region 

 but they have not been sufficiently studied. 



