142 BOTANICAL GAZETTE [AUGUST 
S. petrophila. In the size of the fruiting aments S. groenlandica is 
next to vigorous forms of S. arctica and to S. arctica var. sub- 
cordata. 
The type of S. groenlandica has been collected by VAHL “in 
locis humidis Groenlandiae orientalis et occidentalis a limite maris 
ad alt. 200 pedum.” I have not seen a specimen of VAHL’s and no 
material from eastern Greenland. Judging by the specimens I have 
examined, its range extends from Disco Island (70° N. latitude) 
through the southern part of Baffin’s Land westward to the Bath- 
urst Inlet (about 109° W. longitude), and southward along the 
shores of the Hudson Bay through Ungava and Labrador to the 
western Gaspé Peninsula and the Port 4 Port Bay in western New- 
foundland. There are also some rather uncertain and fragmentary 
specimens from the Lancaster and Jones Sound, and probably the 
habitat of S. groenlandica reaches its northern limit at about the 
76th parallel. Other specimens have stomata in the upper epider- 
mis of their leaves and may represent a different variety or be of 
hybrid origin; they need further observation. 
ARNOLD ARBORETUM 
Jamaica Pratn, Mass. 
