1021] Fernald,— Expedition to Nova Scotia 231 



In Nova Scotia as elsewhere Danthonia is amazingly variable and 

 it is impossible to draw lines with the definiteness of current treat- 

 ments. The plant here treated as 1). comprcssa is a good match for 

 Austin's original material and may so pass until the genus can he 

 satisfactorily studied. 



** Spartina alterniflora Loisel., var. pilosa (Merr.) Fernald, 

 Rhodora, xviii. 179 (1916). Marshes along Sissiboo River, Wey- 

 mouth. 



** Sieglingia decumbens (L.) Bernh. Peaty or wet sandy soils, 

 Yarmouth Co.: Cedar Lake; Yarmouth; Lily Lake; Arcadia; Tre- 

 fry's Lake; Tusket. Possibly indigenous, but growing in half-culti- 

 vated areas. See pp. 95, 143, 151. 



Distichi.is spicata (L.) Greene. Borders of salt marshes. Yar- 

 mouth Co.: Sand Beach. VICTORIA Co.: Baddeck Bay. Recorded 

 by Nichols from northern Cape Breton. See p. 164. 



** Poa costata Schumacher, Enum. PI. Saell. i. 28 (1801). See 

 pp. 133, 139, 164. Mossy woods and glades. Annapolis Co. : southern 

 slope of North Mt., near Middleton. Hants Co. : Truro. Victoria 

 Co.: Port Bevis. 



P. trivialis L. Spruce swamps and springy ditches, Yarmouth 

 and Shelburne Cos., often seeming like an indigenous plant as it does 

 on Cape Cod and in Newfoundland. 



P. saltuensis Fernald & Wiegand, Rhodora, xx. 122 (1918). 

 To the Cape Breton stations cited in the original description should 

 be added Hants Co.: woods along Five-Mile River. Cumberland 

 Co.: swampy woods, Springhill Junction. 



* Glyceria obtusa (Muhl.) Trin. Common in peaty swales and 

 bogs of Yarmouth Co. and southern Digby Co. 



G. laxa Scribn. Common in swales and borders of spruce swamps, 

 Digby and Yarmouth Cos. to Queens. Reported by Nichols from 

 Cape Breton. Common on Prince Edward Island. 



** G. grandis Watson, forma palleseens, n. f., spiculis flaves- 

 centibus. 



Spikelets yellowish. — Nova Scotia: brooksides and wet meadows, 

 Yarmouth, July 4, 1920, Bissell, Pease, Long & hinder, no. 20,026 

 (type in Gray Herb.). Maine: Dover, September 1, 1894, Fernald, 

 no. 564; Greenvale, 1894, Kate Furbish. 



* G. pallida (Torr.) Trin. Boggy swales and savannahs of the 

 Tusket River, Yarmouth Co. Previous records from Nova Scotia 

 rest on the common G. Fernaldii (Hitchc.) St. John, Rhodora, 

 xix. 76 (1917). See p. 166. 



Puccinellia maritima (Huds.) Pari. Common on salt marshes 

 ;ind sea-strands from Shelburne and Yarmouth Cos. to Hants. See 

 pp. 94, 102. 



P. PAUPERCULA (Holm.) Fernald & Weatherby, var. ALASKA NA 

 (Scribn. & Merrill) Fernald & Weatherby, Rhodora, xviii. IS (1916). 

 Common on saline shores throughout the province. 



