156 

 Order hi. Selaginellace^e. 



526. SELAGINELLA, Beauv. 



1267. S. rupestris, Spring. 



Rare. Cliffs of Niagara River, near the Devil's Hole. 



1268. S. Apus, Spring. 



527. ISOETES, L. 



1269. I. echinospora, Durieu, var. Braunii, Engelm. 



Order 112. Salviniace^e. 



528. AZOLLA, Lam. 



1270. A. Caroliniana, Willd. 



Rare. Burnt Ship Bay, Grand Is., Niagara River, Clinton; 

 Niagara Falls, Dr. J. W. Robbins. 



