THE FERX BULLETIN 



55 



from America f. Boottii (A. Br.) is from Mas- 

 sachusetts. — Isoctcs Boottii A. Br. ; f. Flettii 

 (A. A. Eaton) is from Washington and British 

 Columbia. — Isoctcs Flettii A. A. Eaton ; 

 f. maritima i L nderw.) is from Vancouver 

 Island. — Isoctcs Maritima Underw. : f.muricata 

 (Dur. ) ranges from Xova Scotia to New Jer- 

 sey. — Isoctcs nutrient a Dur. : f. robusta En- 

 gelm. is from New Hampshire and Vermont. 



280. Isoetes Engelmanni A. Br. Common ; in shal- 

 low water or on moist banks of streams. Maine 

 to Delaware and Missouri. 



The forms Caroliniana A. A. Eaton from 

 Carolina, f. fontana A. A. Eaton from Penn- 

 sylvania and f. Georgiana Engelm. from 

 Georgia have been reported ; f . graci is Engelm. 

 is found with the type. 



281. Isoetes flaccida Shuttlew. Xot uncommon ; in 

 ponds and streams, Florida. 



The forms Chapmani Engelm. and rigida 

 Engelm. have been reported with the type. 



282. Isoetes foveolata A. A. Eaton. Rare. Xew 

 Hampshire and Massachusetts. The form 

 plenosporaA. A. Eaton is reported with the 

 type. 



283. Isoetes Gravesii A. A. Eaton. Rare. Connecti- 

 cut. — Isoctcs valida Gravesii (A. A. Eaton.) 

 Isoetes Ecitoni Gravesii (A. A. Eaton. ) 



284. Isoetes hieroglyphica A. A. Eaton. Rare: in 

 lakes. Maine. Possibly a form of Isoetes 

 Tuckertnani. 



