Sagittaria ALISMACEAE Sagittaria 



S. latifoUa Willd. 



Common and widely distributed on the Peninsula. Frt., Sept. 



S. pubescens Muhl. {S. latifolia var. pubescens (Muhl.) J. G. Sm.) 

 Infrequent; swamps and banks of streams of the Piedmont. 



S. Engelmanniana J. G. Sm. 



Rare, ponds and ditches: Tubmill Pond, 2 mi. n. of Milford (K), 

 Otis, 10 Sept. 1920 (A); pool in meadow above SaUsbury (Wi), 

 Wherry & Pennell, 12833, 4 Sept. 1925 (A); near Vienna (Wi), F. 

 Shreve, No. 1309 (U). 



j/' S. falcata Pursh. (S. lancifoUa of Gray's Man., ed. 7.) 



Infrequent, swamps and brackish river shores, Caroline County 

 and southward. 



S. rigida Pursh. 



Rare: several collections, from 1860 to 1896, on the shore of 

 Delaware River and tributaries near Wilmington, later exterminated 

 in these localities by industrial wastes; Dover (K), Commons, 1863 

 (A). 



S. graminea Mx. See Clausen: Rhodora 39, 29-31. 1937. 



Frequent; borders of ponds, wet fields and muddy banks of 

 streams, from the Fall Line southward to Sussex County. Frt. 

 July, Aug. 



S. Eatoni J. G. Smith. 



Rare: tidal mud of Delaware River, Gordon Heights, Commons, 

 10 Aug. 1894 (A). No other known collection. 



S. teres Wats. See Clausen : 1. c. 



Rare: Salisbury (Wi), Commons, Sept. 1863 (A); millpond at 

 Milton (S), Commons, 17 Aug. 1899 (A). 



S. subulata (L.) Buch. 



Frequent in tidal mud of the Coastal Plain, southward to 

 Wicomico County. Frt. Sept. 



Var. natans (Mx.) J. G. Smith. (*S. lorata (Chapm.) Small. 

 See Fernald: Rhodora 42, 408. 1940.) 



Rare: in Hudson Pond, 5 mi. s. of Milford (S), Otis, in 1913 

 (D). The specimen is fragmentary and its determination 

 uncertain. 



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