42 SANDUSKY FLORA. 



ZANNiCHELLlA, Mitchell, Horned Pond-Weed. 

 Z. PALUSTRIS. 



The "variety" pedunculata grows, or did grow 

 in one of the rivulets flowing from the Blue Hole, 

 Castalia ; rare. 



ALISMACE^E. 



ALlSnA, L. Water-Plantain. 

 A. PLANTAGO. L. 



Coinnion. 



LOPHOTOCARPUS, T. Durand. 



L. CALYCiNUS, (Engelm) J. G. Smith.* 



In a small pond bordering the southern 

 boundary of Sandusky. 



SAQITTARIA, L. Arrow Head. 

 S. ARIFOLIA. Nntt. 



Oxford, Danbury ; scarce. 



S. GRAMINEA, Michx.* 



Sandusky Bay. "East Harbor," A. J. Pieters. 

 S. LATiFOLiA. Willd. ( S. VARIABILIS, Eugelm. ) 

 Common and variable. 



S. RIGID A. Pursh. ( S. HETEROPHYLLA, Pursh. ) 



Sandusky Bay, Put-in-Bay, Harbors ; frequent. 

 In deeper water than the last. 



HYDROCHARIDACE^. 



ELODEA, nichx. Water Weed. 

 E. CANADENSIS, Michx. 



Common. Kelley's Island, Put-in-Bay. Filling 

 the cove east of Sandusky so as to make it 

 difficult to row a boat there. 



