1921] Fernald, — Expedition to Nova Scotia 103 



tima, was on the barrier beach, and back of the beach were two salt- 

 marsh coves with boreal and austral halophytic sedges wonderfully 

 mingled: in one cove the arctic Carcx norvcgica forming a pale turf 

 close beside a tall colony of the austral Scirpiu Olneyi, a character- 

 istic species of such habitats from the West Indies and northern 

 Mexico to the coast of New Hampshire; in the next cove a similar 

 mingling of the boreal Scirpus rufus, previously unknown south of 

 Cape Breton and the Magdalen Islands, and the curious "walking" 

 sedge, Eleocharis rostcllata, extending north from Mexico and Cuba 

 to Massachusetts, and heretofore unknown east of an isolated north- 

 ern station in Sagadahoc County, Maine. 



Long and Pease had gone a mile or so beyond Arcadia village to 

 the shores of Porcupine Lake, 1 where in the sphagnous margin of a 

 rill they had again found Schizaca pusilla, there associated with Are- 

 thusa bulbosa and very young specimens of a Bartonia. On dry 

 gravel they had collected Panicum subvillosum, which soon proved 

 to be one of the commonest species of the province, and Antennaria 

 petaloidca, var. subcorymbosa Fernald, 2 a characteristic plant of east- 

 ern Newfoundland, Prince Edward Island and Nova Scotia, locally 

 westward to the lower Penobscot in Maine, and found in very typical 

 form by Bicknell on Nantucket. 3 



They also brought in very characteristic material of a tall shad- 

 bush with the young leaves densely tomentose, the mature elliptic- 

 oblong and acute, sharply and somewhat remotely toothed and 

 obviously not like those of A. oblongijolia, so common in southern 

 New England, but with ascending calyx-lobes much as in that species. 

 They had been collecting the same thing before my arrival and after- 

 ward we found it one of the commonest large shrubs as far east as 

 Queens and Annapolis Counties, either in peat or gravel. This 

 material exactly matches the numerous specimens in the Gray Herb- 

 arium which Wiegand has identified as Amelanchicr intermedia 

 Spach. 4 as do specimens of a characteristic tall shrub of Prince Ed- 



1 The name Porcupine Lake is applied by the people of Yarmouth County to the 

 unnamed lake of the topographic map slightly east of Arcadia; while the next lake 

 to the east, called Porcupine Lake on the map, is universally known as Trefry's 

 Lake. 



^Rhodora, xvi. 133 (1914). 



s Bicknell, Bull. Torr. Bot. CI. xliii. 267 (1916); xlvi. 437 (1919): "Such plants 

 of Nantucket as . . . and Antcnnaria petaloidea, var. subcorymbosa would 

 scarcely be looked for from elsewhere than far to the east." 



* See Wiegand, Rhodora, xxii. 147 (1920). 



