20 SPHAGNACE/E. 



10. Sphagnum Lindbergii Schp. (Tab. VIII. A.) 



Robust, 6-12 inches high. Variously coloured, usually 

 yellowish green, with a more or less deep tinge of reddish brown. 

 Stem dark brown ; cuticular cells without pores. Stem leaves 

 reflexed, shortly and broadly oblong or almost square, slightly 

 wider at the top and truncate, fimbriated across the whole width 

 of the leaf, but not down the sides, cells very broad and lax above, 

 gradually narrowing towards the base, especially at margin, where 

 they form a wide border which rapidly becomes narrower as it 

 ascends the leaf. A few fibres and pores only in the small 

 auricular cells at base. Branches 4-5 in a fascicle, the divergent 

 ones spreading, the pendent closely appressed to the stem. Branch 

 leaves more or less seriate in 5 rows, slightly undulate when dry 

 (in some forms distinctly so, in others not at all), firm, glossy, 

 broadly or narrowly ovate-lanceolate, more or less acuminate, 

 truncate and toothed at apex, with involute margin ; border of 

 narrow cells rather distinct, widest at base. Hyaline cells with 

 pores of a medium size, usually few in number, but sometimes 

 more numerous. Chlorophyllose cells oval-cuneiform, emerging 

 on the dorsal face, covered by the hyaline on the ventral surface. 

 Antheridia on pendent branches. 



Hab. Deep bogs in the north ; Ross ; Shetland. 



A very fine plant, resembling S. intermedium, but differing entirely in the form of 

 the stem leaves, and also in the branch leaves not flexuose or recurved when dry. I 

 have received a variety of forms gathered in Labrador, from the Rev. A. C. Waghorne, 

 some of them, notably vars. immersum and fuscescens Warnst, very robust, dark 

 brown or purplish black, with very large, elongated leaves, which are secund at the 

 apex of the branches, and sometimes distinctly undulate when dry. 



11. Sphagnum intermedium Hoffm. (S. recurvum P. 



Beauv., Schp. Syn.) (Tab. VIII. B.) 



In loose masses, pale green or whitish, 6-12 inches high or 

 more. Stem very pale, greenish white ; cuticular cells usually 

 in 2 layers, hardly distinct from the outer layers of the central 

 axis, non-porose. Stem leaves small, reflexed, deltoid or ovate- 

 triangular, narrowed to an obtuse point, which is toothed or 

 slightly eroded ; cells mostly without fibres or pores, border very 

 broad at base, narrowing upwards but reaching summit, and still 

 several cells in width in the upper part of the leaf. Stem con- 

 cealed by the pendent branches, which are closely appressed. 

 Leaves of divergent branches broadly lanceolate ; closely 

 imbricated, erecto-patent and straight when moist, when dry 



