56 



ACORUS, L. 



A. Calamus, L. SWEET FLAG. 

 Common. 



LEMNACE^. 



LEMNA, L. DUCKWEED. 



L. trisulca, L. 



L. minor, L. 



Both species common. Mr. Morong remarks that they grow 

 in the northern part of Long Pond in such masses as to im- 

 pede the oars in rowing. 



TYPHACE^E. 



TTPHA, Tourn. 



T. latifolia, L. CAT-TAIL. 



Rather rare ; occurs in a few bogs near the town and in Poco- 

 mo. Morong. 



T. angustifolia, L. NARROW- LEAVED CAT-TAIL. 



Nine-tenths of the Typha on the island is of this species. It 

 forms extensive areas in bogs in all parts of the island. Mo- 

 rong. 



SPARGANIUM, Tourn. BUR-REED. 



S. eurycarpum, Engel. 

 Common. 



S. androcladum, Morong. (S. simplex, Huds., var. androcla- 

 dum, Engelm.) 



Almanac Pond, L. L. D. Mr. Morong says these specimens 

 were "peculiarly wide-spreading." In the Wm. H. Gardner 

 lot hedged with Cockspur Thorn west of the town. M. L. 0. 



NAIADACE^. 



NAIAS, L. 



N. flexilis, Rostk. 

 Long Pond. Morong. 



