m 



EUROPE AND NORTH AMERICA. 



51 



\ 



Mobberley, Cheshire (Whitehead, 1876) j Eskdale old alum works, Whitby, Yorkshire 

 (Anderson). Lapland: At Lycksele (Angstrom), and Pitea (Sffilan). Finland: Mt. 

 Hunneberg, and at Loka, in Westmanland (Hamnstrom) ; at Olsbacka (Hartman) ; 

 Grycksbo, in Dalarne (Angstrom) ; Isl. Fyen, at Hofmansgave (Hofman-Bang). 



Although this plant is still retained as a species by Professor 

 Schimper, there cannot be the slightest doubt that it belongs to the 

 series of forms referable to Sph. subsemndum. The stipules or 

 auricles are most variable in size and structure, and in this species 

 no two forms possess them in the same degree of development. 

 Besides the ordinary state, an immersec ibrm occurs which some- 

 times grows to a large size, and differs in its deep green colour and 

 weak flabby branches, which collapse when removed from the water. 



Var. S. obesum, Wils. 



Plants very robust, pale green, tinged with reddish brown. 

 Branches swollen, obtuse ; branch leaves large, very broad, truncate 

 at apex and 5-toothed, closely imbricated. Stem leaves very 

 large, ovate, fibrose in upper part, or sometimes throughout. 



Synon. — Sph. contortum var. y. obestim, Wils. Bry. Brit. p. 22 (1855). 



Sph. subsecundum var.y. obesum, Schimp. Synops. ed. 2, p. 844 (1876). Braithw. 

 Sphag. Brit. Exsic. n. 18. 



Sph. subsecundum var. turgidum, C. Mull. Synops. i. p. loi. ScHLitPH. 1. c. 



Sph. denticttlaUim (MouG. Nestl.), Bridel, Bry. Univ. i. p. 10. 



Hab. — In deep pools and ditches. Not common. 



Europe. — England: Alderley, Cheshire (Wilson) ; Cam Galva Moor, Penzance, 

 Cornwall (Curnow) ; Darnholm, Goathland, Yorkshire (Anderson). Scotland: Glen 

 Prosen, Forfar (Rev. J. Fergusson). Germany: Pegnitz, in Franconia (Arnold); 

 Kiebitz Bog, near Halle (Schliephacke). 



The most robust of all the forms, and in deep water attaining 



a great length. It is generally of a dirty reddish-brown colour, 



and the fruit is rare and usually produced about the middle of the 



stem. 



Group C— TRUNCATA. 



Plants densely ramulose, forming compact cushion-like tufts. 



Branch leaves erecto-patent, broadly oblong-lanceolate, with the 



apex truncate and toothed ; the margin involute for nearly all its 



length. 



8. Sphagnum Angstromii, C. Hartm. 



Pl. XL 



Dioicous ; robust, pale green. Stem pale, with three layers of 



cuticular cells, densely ramulose. Stem leaves obovate-lingulate, 



the apex truncate, and slightly fimbriate. Branch leaves broadly 



li 2 



