FLORA OF THE UPPER SUSQUEHANNA. IT 



ALISMACE/€. 



ALISMA L. 



A. PlantagO'aquatica L. Waikr Pi.am ain. Common in swamps, 

 along streams and in other low grounds, often in shallow water. 

 Leaves ovate or oblong ; panicle a foot or more high, with nu- 

 merous, small, white or pale pink, three-parted ilowers. June- 

 Aug. { A. piixntago L. ) 



SAGITTARIA L. 



S. latifolia Willd. Cummon Arrow-head. Broad-ieaved Ar- 

 row-head. Frequent in wet ground or shallow water. A char- 

 acteristic plant on the borders of our larger streams. Ouite 

 variable as to foliage. ( S. variabilis Engelm. ) 



S. rigida Pursh. SESsiLEFRiiTiNCr Arrow-head. Less common 

 than the preceding; found in the same places. Leaves variable, 

 usually narrow, entire or with slender basal lobes. ( 5. hctero- 

 phylla Pursh.) 



S. graminea Michx. Grass-leavkd Arrow-head. Geneganslet 

 Lake ; abundant, Coville. Coves of the Chenango and Susque- 

 hanna; plentiful, CI lite. Along the Susquehanna in shallow 

 water. Graves ; Fenjio. Not reported elsewhere. Leaves long- 

 petioled, the blades linear to elliptic, often submerged. 



JUNCAGINACE/E. 



SCHEUCHZERIA L. 



S. palustris L. Very rare Round Pond. McDonough; Brisbin 

 Pond, Coville. Pond Brook. CI life. '• Ararat marsh, Dudley." 

 — Flora of the Lackawauua and Hjomiiig \' alleys. The 

 only stations. 



NAIADACE/C. 



POTAMOGETOX L. 



P. natans L. C<'MM<».\ Pond Wild. Common in slow streams 

 and pools throughout our range. 



