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. ecHnosrora Dur., var. Braunu (Dur.) Engelm. Gravelly 
and muddy bottoms of brooks, West Branch of Tusket River, Have- 
lock and New Tusket, Digby Co. 
Pinus SrRoBUs 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 OCCIDENTALIS L. As suggested in RHopora, xxiii. 188 
(1921), Cedar Lake, east of Corberrie, Digby Co., proves to have a 
characteristic growth of Thuja at its border. 
PorAMoaETON OaKrsiANUS Robbins. Probably common through- 
out the silicious areas; additional collections from Lunenburg and 
Hants Cos. 
P. putcHER Tuckerm. Diıcsgy 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. AwPLIFOLIUS Tuckerm. ANNAPOLIS Co.: shallow water of 
Young's Lake, North Mt., Belle Isle. Dıcsy Co.: peaty cove in 
Little Meteghan Lake. 
P. conreRvomes 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. prmorpHus Raf. At several stations in Digby and Lunenburg 
Cos. 
SCHEUCHZERIA PALUSTRIS L. Quagmires of Shelburne Co. 
"*ALISMA PLANTAGO-AQUATICA 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. 
