Report of tee State Botanist. 43 



most available charactet* for distinguishing this species from its 



allies. The stems are sometimes very prickly, especially when 



young. 



Rosa lucida Ehrh. 



'' Margins of swamps or moist places " is given in the Manual 

 as the habitat of this species. On Long Island it is not uncommon 

 to find unmistakable forms of it growing in dry places and asso- 

 ciated with IL huriiilis. The stout spines, which are either 

 straight or curved, seem to be the most available character by 

 which to distinguish it from R. humilis^ but it must be confessed 

 that intermediate forms occur which are perplexing. I have not 

 observed prickles on the stem of this species, but they are some- 

 times present in R. humilis. 



Amelanchier Canadensis 7! ct- G. 



A form of variety rotundifolia, three to six feet high, occurs 

 in sandy soil near Karner. Variety ohlongifolia also grows there, 

 but generally with the leaves rounded or broadly oval. A dwarf 

 form also occurs, three or four feet high and having three to six 

 flowers in a raceme. The petals are short and narrow. 



Sedum. acre L. 

 Very plentiful about Brownville, growing in thin soil covering 



rocks, 



Myriophyllum ambiguum Xxdt. 



Fisher's island, Suffolk county. Rev. ./. L. Zahriskie. The 

 small variety limosum. 



Lythrum Salicaria L. 

 Head of Lake Cham])lain. July. 



Cuphea viscossissima Jacq. 

 Vaughn's, Washington county. Burnfutin. This is an exten- 

 sion of its range northward. 



Opuntia vulgaris Mill. 

 Specimens of an Ojjuntia iouiid growing in sandy soil near the 

 mouth of Peconic river, with few or no spines, short leaves and 

 fruit not over an inch long ai)])ear to l)e referable to this sj)ecies, 

 to which they are referretl in the State Flora. 



