164 Rhodora [July 



some pondweed with purple-mottled stems, Potamogeton puHcher? 



heretofore unknown northeast of Nantucket and of York County, 

 Maine (fig. 15). 



After the Sandy Cove trip Dr. and Mrs. Graves felt that they 

 must get hack to Connecticut and we attempted to forget the loss 

 of their good comradeship by ourselves travelling as far in the oppos- 

 ite direction — to Cape Breton; Bissell and Under to North Sydney 

 as a base, Long and 1 to Baddeck, to the hospitable home of Mr. 

 and Mrs. Charles T. Carruth of Cambridge. The region including 

 Baddeck and North Sydney had already been much botanized by 

 John Macoun and by many amateurs, so that we anticipated no 

 noteworthy discoveries; but we naturally wanted a glimpse of this 

 region of Carboniferous sandstones, gypsum-cliffs and limestones, 

 especially to compare it with the acid southwestern counties. And 

 the comparison was truly a contrast. We saw absolutely none of 

 the coastal plain specialties which all summer had occupied oui 

 concentrated attention. Around the gypsum outcrops at Port 

 Bevis (near Baddeck) were many of the species which Long and 

 Pease had got in similar habitats along 5-Mile River or which we had 

 from Truro: Cystopteris bulbifera, Car ex eburnea, Sphenopkolis pollens, 

 Erigeron hyssopijolius, etc. in the rock crevices; Pteretis nodulosa, 

 Poa costata, Car ex retrorsa, Ranunculus recurvatus, Solidago laHfolia 

 in the woods; Ranunculus Purshii in the pools; and a few we had 

 not previously seen: Shepherdia canadensis in the talus, Gnaphalium 

 sylvaticum in pastured woods and other half-natural but doubtfully 

 native habitats, Cornus Amomum along a brook, and the boreal Sctr- 

 pus paucifiorus in the border of a salt marsh near Baddeck where the 

 southern Distichlis spicata abounds. In a cold brook with Pota- 

 mogeton alpinus, was a vigorous growth of P. vaginatus Turcz., 1 a 

 boreal, circumpolar species not before known in Nova Scotia, and 

 here, as on Prince Edward Island, in New Brunswick, and on the 

 Labrador Peninsula without good fruit; and at the mouth of a brook 

 entering Baddeck Bay the colony of Thelypteris palustris (Aspidium 

 Thelypteris) was as deliciously fragrant as Vanilla Grass (Hierochloe 

 odorata). This fragrant form of the Marsh Pern has been previously 

 known from a collection made by Miss Sarah F. Sanborn in southern 



'See St. John, Rhodora, xx. 191 (1918). 



