PaRT 1, 1909] NAIADACEAE 35 
auriculate, the lobes toothed; flowers monoecious; staminate flower with a single 1-celled 
anther; pistillate flower about 2 mm. long; stigmas 2; mature fruit oblong-cylindric, 
reticulate with longitudinal rows of oblong areolae. 
TYPE LOCALITY: Albany, New York. 
DISTRIBUTION : Massachusetts to Missouri, south to New Jersey and Pennsylvania. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. (. 282; Mem. Torrey Club 3?: p/. 68; Trans, Linn. 
Soc. II. 5: pl. 41, f. 122-125, 
