112 ^. ROCHESTER ACADEMY OF SCIENCE. [Oct. S, 



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. \y. nodosus 7?iegacephaliis Torr.] 



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

 Long pond. Dr. Aiuia H. Searmg. 



1006. J. Canadensis J. Gay, var. longicaudatus Engl. {J.Ca7tadensis J. Gay.] 



Borders of swamps, marshes, etc.; frequent. 



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



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



414. LUZULA DC. [Jlncoides Adans.] 



1008. L. vernalis DC. {L. pilosa Willd.) {Juncoides pilosuin (L.) Kuntze.] 



Woods, banks, and moist grass land ; common. 



1009. L. campestris DC. \Juncoides campcstre (L.) Kuntze.] 



Dry fields and woods ; common. 



TYPHACE^. 



415. TYPHA Tourn. [L.] 



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



Swamps and marshy places ; common, 

 loii. 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. 3. simplex Huds. 



Marshes and borders of ponds, etc.; freijuent. 



1015. S minimum Fries. 



\'ery rare. In a little pool, Irondequoit, Dr. C. M . Booth. 



ARACE/E. 



417. ARIS.^E.VA Martius. 



1016. A. triphyllum Torr. {A . triphyl/itm [y.)'Yoxx.\ Inulw Turnip. 



Rich woods and ravines ; common. 



1017. A. Dracontium Schott. \A . ])racontium {\.)^c\\o\.\..\ Grken Dragon. 



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

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



4JH. PELTANDRA Raf. 



1018. P. undulata Raf. [P. Virginica Kunth.) |/'. I'/rginicci (\..) KunthJ 



Marshes along Genesee river and elsewhere ; not unconnnon. 



