REPORT OF THE STATE BOTANIST 1902 55 



I . 



Zannichellia palustris L. 

 Zannichel lia 

 The Susquehanna river. Infrequent. July- September. 



Naias flexilis (Willd.) Rost. & Schmidt. 

 Slender naias 

 Frequent in the river. Summer. 



ALISMACEAE 

 Alisma plantago-aquatica L. 

 Water plantain 

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



Sagittaria latifolia Willd. 

 S. variabilis Engelm. 

 Broad-leaved arrowhead 

 In wet ground or shallow water. Common. Summer. 



Sagittaria rigida Piirsh 

 S. heterophylla Pursh 

 Sessile-fruiting arrowhead 

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

 shallow water. July-September. 



Sagittaria graminea Michx. 

 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 Michx. 

 Little J)lue stem. Broom heard grass 

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



