1921] Fernald, — Expedition to Nova Scotia 241 



*J. effusus, var. Pylaei (Laharpe) Fernald & Wiegand, lliio- 

 doka, xii. 92 (1910). Open swampy thickets, Baddeck. 



J. canadensis J. Gay. Abundant in wet sandy or peaty soils, 

 Yarmouth Co. to Annapolis and Queens Cos. 



** J. canadensis J. Gay, var. sparsiflorus, n. var., dense cespitosus 

 robustus 6-8 dm. altus; inflorescentiis 0.7-2 dm. longis, ramis erectis 

 vel valde adscendentibus rigidis; capitulis discretis plerumque 3-7- 

 floris; perianthiis 3.5-4 mm. longis. 



Densely cespitose, robust, 0-8 dm. high: inflorescences 0.7-2 

 dm. long, with erect or strongly ascending rigid branches: heads 

 scattered, mostly 2-7-rlowered : perianths 3.5-4 mm. long.— Nova 

 Scotia: boggy savannah bordering Butler's (Gavelton) Lake, Sep- 

 tember 2, 1920, Fernald & Long, no. 20,685, September 4, Fernald, 

 Long & Linder, no. 20,686 (type in Gray Herb.); boggy savannah 

 bordering St. John Lake, Springhaven, October 8, 1920, Fernald & 

 binder, no. 20,687. Massachusetts: sandy and peaty margin of 

 pond between Grassy and Lower Simmons Ponds, Dennis, August 

 22, 1918, Fernald & Long, no. 16,549. See p. 166. 



In typical J. canadensis the branches are less erect, the flowers 

 very numerous in the glomerules and the perianths 2.5— rarely 3.5 

 mm. long. 



** J. subcaudatus (Engehn.) Coville & Blake, var. planisepalus, n. 

 var., a forma typica differt perianthiis 2-3 mm. longis; sepalis petalis- 

 que lanceolatis planis dorso viridibus; capsulis maturis valde exsertis. 



Differing from the typical southern form in having the perianth 

 2-3 mm. long: sepals and petals lanceolate, flat and green on the 

 back: mature capsule conspicuously exserted.— Savannahs, bogs 

 and spruce swamps of Nova Scotia. Digby Co.: thickets bordering 

 savannahs by Little River, east of Tiddville, August 22, 1920, Fer- 

 nald & Long, no. 20,671 (type in Gray Herb.). Yarmouth Co.: 

 sphagnous bog at edge of spruce swamp, Belleville, July 27, L^ong & 

 hinder, no. 20,665; springy sphagnous spot at border of spruce woods 

 near Randel Lake, Argyle, August 4, Long & Linder, no. 20,066; 

 sphagnous swales bordering Salmon (Greenville) Lake, August 13, 

 Fernald, Bissell, Graves, Long & Linder, no. 20,668; open grassy 

 roadside, Tusket Falls, August 20, Fernald, Bissell, Graves, Long & 

 LAnder, no. 20,670; spruce and alder swamp, Pembroke Shore, October 

 6, Fernald & Linder, no. 20,723; boggy margin, East Branch of Tus- 

 ket River, Quinan, October 8, Fernald & Linder, no. 20,672. Shel- 

 BURNE Co.: spruce swamp, Villagedale, August 7, Fernald, L.ong & 

 Lender, no. 20,667. Queens Co.: springy sphagnous bog in spruce 

 woods near mouth of Broad River, August 16, Fernald & Bissell, 

 no. 20,669. 



In the southern form of the species the perianths are 3-4 mm. long; 

 the sepals and petals lance-linear and conspicuously ribbed or cor- 

 rugated and the capsule commonly but little exserted. Some sped- 



