160 Rhodora [August 



*Selaginella rupestris (L.) Spring. Basalt ledges, summit of 

 Shobel's Mt., Sandy Cove, Digby Co. 



*Isoetes macrospora Dur. Gravelly bottom of Clyde River, 

 Middle Clyde. 



I. echinospora Dur.. var. Braunii (Dur.) Engelm. Gravelly 

 and muddy bottoms of brooks, West Branch of Tusket River, Have- 

 lock and New Tusket, Digby Co. 



Pinus Strobus L. The wind-swept and starved trees on the 

 rocky barrens near Armdale, Halifax Co., have leaves only 2.5-5 

 cm. long and from a short distance away so strongly resemble P. 

 Banksiana that such trees may have been the bases of unverified 

 records of P. Banksiana from near Halifax. 



Thuja occidentals L. As suggested in Rhodora, xxiii. 188 

 (1921), Cedar Lake, east of Corberrie, Digby Co., proves to have a 

 characteristic growth of Thuja at its border. 



Potamogeton Oakesianus Robbins. Probably common through- 

 out the silicious areas; additional collections from Lunenburg and 

 Hants Cos. 



P. pulcher Tuckerm. Digby Co.: quagmire-margin of Sears 

 Lake, New Tusket (form with remarkably small and round emersed 

 leaves). Lunenburg Co. : brook-beds in peaty swale by Rhodeniser 

 Lake, east of Bridgewater. • 



P. amplifolius Tuckerm. Annapolis Co.: shallow water of 

 Young's Lake, North Mt., Belle Isle. Digby Co.: peaty cove in 

 Little Meteghan Lake. 



P. confervoides Reichenb. Shelburne Co.: Swanburg Lake, 

 Shelburne; Five-River (Morris) Lake. 



In bog-pools near Argyle Head, Yarmouth Co., P. confervoides had 

 developed, in early September, many winter-buds and tubers. The 

 plants, which had fruited in July and early August, were nearly 

 disintegrated, but their extensively creeping, filiform rootstocks bore 

 short branches terminated by reddish fusiform tubers, while the old 

 axils of the stems and the tips of the disintegrating branches bore 

 fusiform dark-green winter-buds 0.7-2 cm. long, their leaves spread- 

 ing-ascending. 



P. dimorphus Raf. At several stations in Digby and Lunenburg 

 Cos. 



Scheuchzeria palustris L. Quagmires of Shelburne Co. 



**Alisma planta go-aquatic a L., var. parviflora (Pursh) Far- 

 well, Ann. Rep. Comm. Parks & Boulev. Detroit, xi. 44 (1900). 

 The small-flowered and -fruited southern extreme. Hants Co.: 

 Windsor. 



Panicum dichotomiflorum Michx. Shelburne Co.: dryish 

 sandy beaches of Harper and Welshtown (Birchtown) Lakes. 



