1922] Fernald, — Notes on the Flora of Nova Scotia 167 



-I. MARGINATUS Rostk. New stations eastward to Annapolis and 

 eastern Shelburne Cos. 



Lophioi v ameru \\\ (Pursh) Wood. L. septentrionatis Fernald, 

 Rhodora, xxiii. 243 (1922). Lunenburg Co.: sphagnous boggy 



swale I ordering Fancy Lake, near ( 'onquerall. 



At this station the large, freely stoloniferous and subcespitose 

 plants at the quaking margin of the lake are strikingly similar to the 

 original L. septentrioncdis from Digby Neck; but farther back, on 

 drier knolls, the plants are small, with solitary stems, short pedicels 

 and denser lanate tomentum, quite like the typical plant of New 

 Jersey. Study of this material shows that the seed- and capsule- 

 characters, which were exhibited by the Digby Neck material, break 

 down, and that L. septentrioncdis is not specifically separable from L. 

 americana of the New Jersey pine barrens. 



**SlSTRlNCHiUM intermedium Bicknell. Various colonies seem to 

 belong to S. intermedium. The plants are all sterile and there still 

 remains doubt as to whether S. intermedium is a true species. Our 

 collections are from Yarmouth Co.: border of spruce swamp, Mark- 

 land (Cape Forchu); dry fields and clearings near St. John (Wilson) 

 Lake. Annapolis Co.: thin open humus on North Mt., Belle Isle. 



S. a.tlanticum Bicknell. Eastward to Annapolis and Lunenburg 

 Cos. 



Habenaria flava (L.) Spreng. Several new stations, all in the 

 valley of the Tusket, Yarmouth Co., north to Parr Lake and east to 

 Canoe Lake. 



H. obtusata (Pursh) Richardson. Very rare in the western 

 Counties. Annapolis Co.: mossy woods, North Mt., Belle Isle. 

 Yarmouth Co.: mossy spruce woods, Greenville. 



H. MACROPHYLfA Goldie. Digby Co. : old mixed woods near 

 Cedar Lake, New Tusket. 



Spiranthes cernua (L.) Richard, var. ochroleuca (Rydb.) 

 Ames. Characteristic of the dryest of siliceous barrens. Additional 

 stations are, for Yarmouth Co.: gravelly railroad-bank, Belleville. 

 Shelburne Co.: abundant on dry sandy Coreraa-heath, Hope's Lot 

 Barrens, Clyde River; common on dry sandy Corema-barrens north of 

 Jordan Falls. 



Salix viminalis L. Naturalized in roadside thicket, Hassett, 

 Digby Co. 



Ostrya virginiana (Mill.) K. Koch. Yarmouth Co. : wooded 

 shore of Parr Lake; tree with remarkably coriaceous foliage. 



The Varieties of Betula lutea. — In 1904 Dr. Britton, by des- 

 cribing Betula allegkaniensis, 1 called attention to the fact that we 

 have two fairly marked trends of the Yellow Birch which had hither- 



i Britton, Bull. Torr. Bot. CI. xxxi. 166 (1904). 



