i 1 2 ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



1003. J. scirpoides Lam. 



Rare. Shore of lake Ontario, Monroe county, Dr. C. M. Booth. 

 Sodus Point, Wayne county, Dr. S . H . Wright . 



1004. J. nodosus L. 



Low grounds and muddy shores ; common. 



1005. J- nodosus L.var. megacephalus Torr. \jf. nodosus megacephalus Torr.] 



Rare. Wet sandy soil near the shore of lake Ontario, L. Holzer! 

 Long pond, Dr. Amia H. Searing. 



1006. J. Canadensis J. Gay, var. longicaudatus Engl. [/.Canadensis J. Gay.] 



Borders of swamps, marshes, etc. ; frequent. 



1007. J. Canadensis J. Gay, var. coarctatus Engelm. [/. Canadensis coarc- 



tatus Engelm.] Bergen swamp, M . S. Baxter. 



414. LUZULA DC. [Juncoides Adans.] 



1008. L. vernalis DC. {L. pilosa Willd.) [Juncoides pi/osu?n (L.) Kuntze.] 



Woods, banks, and moist grass land ; common. 



1009. L. campestris DC. [Juncoides campestre (L.) Kuntze.] 



Dry fields and woods ; common. 



TYPHACE.E. 



415. TYPHA Tourn. [L.] 



1010. T. latifolia L. Common Cat-tail Flag. 



Swamps and marshy places ; common, 

 ion. T. latifolia L. var. elongata Dudley. 



Characterized in Cay. Fl. p. 102. The prevailing form on the exten- 

 sive marshes at Irondequoit bay. 



1012. T. angustifolia L. 



Frequent on the marshes at Irondequoit bay, Long pond, etc. 



416. SPARGANIUM Tourn. [L.] 



1013. S. eurycarpum Engelm. 



Marshes on the borders of bays, ponds, etc. ; frequent. 



1014. S. simplex Huds. 



Marshes and borders of ponds, etc. ; frequent. 



1015. S. minimum Fries. 



Very rare. In a little pool, Irondequoit, Dr. C. M . Booth. 



ARACE^. 



417. ARISMMA Martius. 



1016. A. triphyllum Torr. [A. triphyllum (L.) Torr.] Indian Turnip. 



Rich woods and ravines ; common. 



1017. A. Dracontium Schott. [A. Dracontium (L.) Schott.] Green Dragon. 



Damp thickets; rare. Shore of Irondequoit bay, Irondequoit, and 

 Black creek, Chili, Dr. Booth. Black creek, Otto Betz . Wayne county. 



418. PELTANDRA Raf. 



1018. P. undulata Raf. [P. Virginica Kunth.) [P. Virginica (L.)Kunth] 



Marshes along Genesee river and elsewhere ; not uncommon. 



