HitTANICA' 



TORREYA 



Vol. 28 No. 3 



May-June, 1928 



Contributions to the Flora of Long Island, New York, 



Fifth Paper^ 



\ViLLi.\M C. Ferguson 



The plants listed below represent species collected in 1926 

 and 1927. In my experience these are rare, or occasional, and 

 not previously published in my series. New localities for rare 

 species previously published are also included and others not so 

 rare where known localities are very few. These were all col- 

 lected b>^ me except the few where the collector's name follows 

 the locality. All are in my herbarium and duplicates of most 

 have been deposited in public herbaria. All grasses were re- 

 viewed by Mrs. Agnes Chase, Carex by Mr. K. K. Mackenzie, 

 and all doubtful plants by the New York Botanical Garden. I 

 am grateful for this cooperation which adds to the value of the 



paper. 



POLYPODIACEAE 



Dryopteris cristataXmarginalis Davenp. Rare in wet woods. Hemp- 

 stead. Determination by R. C. Benedict. 



SELAGINELLACEAE 



Selaginella apus (L.) Spring. Rare in wet or damp shade. Three Mile 

 Harbor (Latham and Ferguson). 



SPARGANIACEAE 



Sparganium eurycarpum Engelm. Rare in swamps. Flushing; Oyster 

 Bay; Newtown. 



ZANNICHELLIACEAE 



PoT.\MOGETON NATAXs L. Rare In ponds and pools. Woodside. 

 PoTAMGETAN FOLiosus Raf. Rare in ponds and pools. Woodside. 



ALISMACEAE 



Sagittaria Engelmanniana J. G. Smith. Rare or occasional in sandy 

 swamps and shores. Long and Lily Ponds, Sag Harbor; Poxabogue 

 Pond; Bridgehampton; Lindenhurst. 



Sagittaria teres S. Wats. Rare in shallow water. Eastern Long Island; 

 Artist Lake, Middle Island. 



^ Previous papers in this series appeared in Torreya22: 43-49, 1922; 

 Bull. Torreya Club 51: 177-201, 1924; 52: 133-136, 1925; 53: 303-308,1926. 



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