129 



of Green Pond. ./. P. Clausen & C 1728, also 172^). Passaic Co.: 

 pool at base of Wolf Den Mt., Upper Mocopin, li. 



¥\•on^ northern New Jersey. Fernald (1932) reported this 

 species only from jxjnds near Milton and from Moosehead (?) 

 Pond. Morris C'ount\-. 



PoTAMOGETON PANOKMiTANUs var. MAJOR G. Fi.sclier. ( )cean 

 Co. : brackish backwater, Mantoloking, E & C 1402. 



Fernald (1932) reported this species from New Jersey only 

 from Closter. 



V Sagittaria graminea ssp. Edwardsiana (Clausen) n. comb. 

 {Sagitfaria Edwardsiana Clausen, in Rhodora 39:30. 1937.) Two 

 years of additional experience and further study of the genus 

 Sagitfaria have caused the writer to alter his opinion concerning 

 the specific validity of S. Edzcardsiaiia. The arrow-head of the 

 New Jersey pine-barrens still seems distinctive, but the signifi- 

 cance of its distinctness now appears less great to him than when 

 he originally published the species. Examination of series of 

 seeds of S. graminea indicates that these vary more than at first 

 supposed and that those of S. Edzuardsiajia come within this range 

 of variation. The foliage characters remain fairly satisfactory, 

 although occasional intermediates with the typical S. graminea 

 do occur. The habit, too, continues to appear significant and 

 indicates that this population of the New Jersey pine-barrens 

 can not lightly be disregarded as a deep-water form of 5". graminea. 

 Observation of abundant S. graminea in the lakes of northern New 

 York, where one can see all stages, from plants on shore com- 

 pletely emersed to those under several feet of water, revealed no 

 plants like those described by the writer. Plants in some of the 

 outlets, under conditions very similar to those in southern New 

 Jersey, never matched them in the succulent phyllodia, the absence 

 of a rosette of flattened basal leaves, or the trailing habit. New 

 York plants always stood up in the water, as does the var. cyclop- 

 tera of Smith (1895), described from the southeastern states. 

 Attempts to match 6'. Edzi'ardsiana with that variety have been 

 unsuccessful. Instead, the New Jersey population seems unique in 

 the three characters mentioned above. Although its dififerences 

 ])erhaps were originally the result of environmental influences, 

 the writer ventures the opinion that it today represents a distinct 



