2 9 



I CONIFERJE. 



Finus. Tourn. P. rigida. Miller. Common. 

 P. inops. Ait. Tottenville ; also near Clifton. 

 P. mitis. Michx. One tree near Gifford's. 

 P. Strobus. L. Not uncommon. 



Juuiperus. L. J. communis. L. One tree of the erect 

 variety grows in the " Cedars " near New Dorp. 

 J. Virginiana. L. Very common. 



ARACEJE. 



Arissema. Martius. A. triphyllum. Torrey. Common. 

 Peltandra. Raf. P. Virginica. Raf. Common. 

 Symplocarpus. Salisb. S. fcetidus. Salisb. Common. 

 Acorus. L. A. Calamus. L. Rather common. 



LEMNACE2E. 



Lemna. L. L. minor. L. Common. Found in flower near 

 Court House. 



L. polyrrhiza. L. Common. 



L. perpusilla. Torr. In ponds, south of the railroad track, 

 near Huguenot, etc. 



TYPHACEiE. 



Typha. Tourn. T. latifolia. L. Common. 

 T. augustifolia. L. Frequent. 



Sparganium. Tourn. S. simplex. Hudson. Var. andro- 

 cladum. Gray. Common. 



NAIADACEJE. 



Naias. L. N. flexilis. Rostk. Frequent. 



Zostera. L. Z. marina. L. Common along the shore. 



Ruppia. L. R. maritima. L. Salt ditch, near New Dorp. 



Potamogeton. Tourn. P. natans. L. Common. 



P. hybridus. Michx. "Silver Lake." (W. H. L. in T. C. B.) 



P. perfoliatus. L. Not rare. 



P. pusillus. L. Near Clove Lake. 



P. pectinatus. L. Along salt water ditches. 



ALISMACEJE. 



Triglochin L. T. maritimum. Salt marshes ; rather 

 common. 



Alisma. L. A. Plantago. L. Var. Americanum. Gray. 

 Common. 



Sagittaria. L. S. variabilis. Engelm. Very common, 

 with its varieties. 



