REPORT or THK STATE BOTANIST 1902 55 



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Zannichellia palustris I.. 

 Z a n n i c h e 1 1 i a 

 The Susquehanna river. Infrequent. July-Septeinber. 



Naias flexilis (Wilkl.) Host. & Schmidl. 

 Slender naias 

 Frecjuent in the river. Summer. 



ALISMACEAE 

 Alisma plantago-aquatica L. 

 Water plantain 

 Swamps, low grounds and along streams. Common. Summer. 



Sag'ittaria latifolia Willd. 

 S. variabilis Engelm. 

 Broad-leaved arrotvJiead 

 Tn wet ground or shallow water. Common. Summer. 



Sagittaria rigida IMirsh 

 S. h e t e r o p h y 1 1 a Pursh 

 Sessile-fru iting arroivhead 

 Along the border of the river. Frequent. Generally found in 

 shallow water. July-September. 



Sagittaria graminea Miclix. 

 Grass-leaved arrowhead 

 Shallow water along the Susquehanna. Frequent. Abundant 

 at Apalachin. July-September. 



VALLISNERIACEAE 



Philotria canadensis (Mich.) Britton 



Elodea canadensis Michx. 



Ditch moss 

 Ponds and streams. Common. May-August. 



Vallisneria spiralis L. 



Eelgrass 

 Common in the river. Summer. 



GRAMINEAE 



Andropogon scoparius Miehx. 

 Little 'blue stem. Broom beard grass 

 Dry banks along the river. Common. August-September. 



