1921] Fernald, — Expedition to Nova Scotia 293 



** S. EUGOSA, var. sphagnophila Graves. Occasional in spruce 

 swamps and savannahs, Yarmouth and Shelburne Cos. See p. 151. 



S. canadensis L. Rare and local in Yarmouth, Shelburne and 

 Queens Cos. Common farther east. See pp. 143, 151. 



* S. sekotina Ait. Victoria Co.: moist thicket near mouth of 

 Be vis Brook, Port Bevis. See p. 170. 



S. serotina, var. gigantea (Ait.) Gray. Yarmouth Co.: grav- 

 elly thicket by Fanning Lake, Carleton. Annapolis Co.: railroad 

 bank, Middleton. 



S. graminifolia (L.) Salisb. Sandy or gravelly shores and damp 

 thickets, apparently throughout. Less common than var. Nuttallii 

 (Greene) Fernald. See p. 157. 



** S. tenuifolia Pursh. Yarmouth Co. : sandy roadside, Sloane 

 Lake, Pleasant Valley. Halifax Co.: gravelly beach of Third 

 Lake, Windsor Junction. See p. 160. 



** S. tenuifolia, var. pynocephala, n. var., caulibus simplicibus 

 vel subsimplicibus superne vix ramosis 3-7 dm. altis; foliis crassis 

 lineari-oblongis vel lineari-lanceolatis obtusis vel acutiusculis vix 

 attenuates valde adscendentibus nee patentibus nee revolutis, mediis 

 2-5 cm. longis 2-6 mm. latis; corymbis densissime glomerulatis vel 

 glomerulis scgregatis 1-5 cm. diametro; involucris valde glutinosis 

 turbinato-hemisphaericis, bracteis apice viridibus glanduloso-ciliatis; 

 ligulis plerumque oblongis. — Peaty, gravelly or sandy margins of 

 lakes, Yarmouth, Shelburne and Queens Counties, Nova Scotia. 

 The following are characteristic Shelburne Co.: shallow water 

 at sandy and cobbly margin of Clement Pond, Barrington, August 

 9, 1920, Fernald, Long & hinder, no. 22,730. Yarmouth Co.: sandy 

 and peaty margin of Great Pubnico Lake, September (i, Fernald, 

 Long & hinder, no. 22,740; shallow water at rocky margin of Goose 

 Lake, Argyle, August 4, Fernald & White, no. 22,735; rocky margin 

 of Randel Lake, Argyle, August 4, Long & hinder, no. 22,734; wet 

 gravelly margin of Butler's (Gavelton) Lake, Gavelton, September 

 2, 1920, Fernald & Long, no. 22,744; cobbly margin of East Branch 

 of Tusket River, Gavelton, September 4, Fernald, Long & lander, 

 no. 22,745; sandy and cobbly beach of Fanning L , Carleton, October 

 7, Fernald & Linder, no. 22,741; boggy savannah bordering St. John 

 Lake, Springhaven, October 8, Fernald & Linder, no. 22,742; peaty 

 and cobbly margin of Salmon (Greenville) Lake, July 31, Fernald & 

 White, no. 22,733; wet lower peaty and cobbly beach of Salmon 

 (Greenville) Lake, August 13, Fernald, Bissell, Graves, L.ong & Lin- 

 der, no. 22,743 (type in Gray Herb.); sandy and peaty beach of 

 Trefry's Lake, Arcadia, July 15, Fernald & Pease, no. 22,727, July 

 29, Fernald & Long, no. 22,732; cobbly margin of Darling Lake, 

 October 6, Fernald & Linder, no. 22,738. 



Differing from typical S. tenuifolia in its simple habit; erect, very 

 thick, firm, broad, short and obtuse or merely acutish leaves; its 



