814 REPORT OF THE FLORA 



Order 110.— IT AID ACES. (Pondweed Family.) 



Naias, L. (Naiad.) 



N. flexilis, Rostk. (Bicknell.) 



Zannichellia, Micheli. (Horned Pondweed.) 



Z. palustris, L. Lower part of the county, now New York. (Bicknell. 



Zostera, L. (Eel-grass. Grass-wrack.) 

 Z. marina, L. 



Kuppia, L. (Ditch-grass.) 



R. maritima, L. Shoal water along the coast. 



Potamogeton, Tourn. (Pondweed.) 



P. natans, L. Ditches and slow streams. 

 P. Oakesianus, Robbins. Ponds and ditches. 

 P. hybridus, Mx. (Bicknell.) 

 P. amplifolius, Tuckerman. Slow rivers. 

 P. perfoliatus, L. (Bicknell.) 



Order 111.— ALISMACEG. (Water Plantain Family.) 



Alisma, L. (Water Plaintain. 



A. Plantago, L. Shallow water and edges of streams. 



Sagittaria, L. (Arrow Head.) 

 S. variabilis, Eng. Wet places. 



Var. latifolia, Gray. With the last. 



Var. diversifolia, Gray. With the last, 



Var. augustifolia, Gray. With the last. 

 S. calycina, Eng. Water in flooded places. 



Var. spongiosa, Gray. Along brooks with the last. 

 S, heterophylla, Pursh. Peekskill. (Le Roy.) 

 S. pusilla, Nutt. Peekskill. (Le Roy.) 



Order 112.— HYDROCHAPJDACEiE. (Frog's-titt Family.) 



Anacharis, Richard. (Water-weed.) 



A Canadensis, Planchon. Slow streams. 



Vallisneria, Micheli. (Eel-grass.) 



V. spiralis, L. Slow waters. Along the coast. 



Order 111— OBCHDACEJE. (Orchis Family.) 



Orchis, L. (Orchis.) 



O. spectabilis, L. Shady woods. 



