ABSTRACT 



This paper is the fifth in a series of reports on the aquatic and 

 wetland flora of New England. It treats all species of the Araceae, 

 Lemnaceae, Xyridaceae, Eriocaulaceae, and Pontederiaceae occurring 

 in New England and includes keys, comments on taxonomy and 

 nomenclature, habitat and distributional information, water chemistry 

 data, illustrations, and dot maps. Those species regarded as rare and 

 endangered in the New England Region or in one or more of the six 

 New England states are also noted. 



UNH LIBRARY 



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KEY WORDS: Aquatic plants, New England Flora, Taxonomy, Araceae, Lemnaceae, 

 Xyridaceae, Eriocaulaceae, Pontederiaceae, Acorus. Orontium, Peltandra, Calla, 

 Symplocarpus, Wolffia. Wolffiella. Spirodela. Lemna, Xyris. Eriocaulon. Pontederia, 

 Heteranthera, Sweet-flag, Calamus, Golden-club, Arrow-arum, Water-arum, Wild Calla, 

 Skunk-cabbage, Water-meal, Mud-midget, Duckweed, Yellow-eyed Grass, Pipewort, 

 Pickerel-weed. 



