On Bog Mosses. By E. Braithwaite. 231 
detected in Europe, and the close relationship between the mosses 
of the two countries has induced me to include these species also 
in the present monograph. 
20. Sphagnum Pylaiei Bridel. 
Bryol. Univ. I, p. 749 (1826). 
Plate OVI. 
Syn.— SuLLiVANT Icon. Muse. p. 12, t. 6 (1864). Austin Muse. Appal. No. 23 
(1870). 
Sph. sedoides var. Sull. & Lesq. Muse. bor. — amer. No. 4 (1856). Sull. 
Mosses of Un. St. p. 12 (1856). 'Sph. cymhifolium forma juvenilis, 0. MiiLL. 
Synop. I. p. 92 (1849). 
Dioicous ? olive- green, fuscous or hlachish. Stem erect, un- 
divided, slender, 2-4 in. high, with a single layer of small cortical 
cells, and a narrow reddish hroim woody layer; branches all 
solitary or in pairs at the lower part of stem, shorty terete, obtuse, 
arcuato-decurved, the cortical cells small, retort-cells few, narrowly 
cylindric, not recurved at apex. 
Stem leaves numerous, laxly imbricated, erect, ovate-oblong, 
concave, rounded and minutely erose at apex, the hyaline cells 
fibrillose. Branch leaves laxly imbricated, very small, ovate, 
obtuse, the margin incurved in the upper third, entire at apex ; 
hyaline cells with strong annular fibres, and without fores, in 
section circular, separated both in front and bach by the chlorophyll 
cells, which are very thich and obtusely trigonous. 
Hab. — Peat bogs. Newfoundland (La Pylaie). Table Eock, 
S. Carolina (Lesquereux). Willey Mountain, New Hampshire 
(James). Adirondack Mountains, New York (Peck). New Jersey 
(Austin). 
Var. /5. sedoides (Brid.) Lindb. 
Sph. sedoides Beidel Bry. Un. I. p. 750, et var. fi. prostratum (1826). Sull. 
Muse. AUeghan. No. 208 (1845). Sull. & Lesq. Muse, bor.— amer. No. 3 (1856). 
Sull. Mosses of Un. St. p. 12 (1856). Ic. Muse. p. 11, t. 6 (1864). Austin Muse. 
Appal. No. 24 (1870). 
Stem procumbent at base, 3-5 in. high, simple or with a few 
short, scattered branches, fragile, flaccid, dull pale green, the upper 
part vinous red. Leaves large, very densely imbricated, obloDg- 
ovate, concave, obtuse, entire or eroso-denticulate, with a border of 
two rows of extremely narrow cells ; hyaline cells elongated, with 
annular fibres, and very few minute pores. Branch leaves similar 
but smaller. 
Hab. — Peat bogs. Newfoundland (La Pylaie). Wet margins of 
Table Kock, S. Carolina (Gray and Lesquereux). Mount Marey, 
New York (Torrey). Adirondack Mountains, New York (Peck). 
Sphagnum Pylaiei and its variety have been regarded by most 
s 2 
