Sphagnum cyclophyllum Sullivant & Lesquereux ex A. Gray 1856

Sphagnum cyclophyllum Sull. & Lesq.; Sull. in A. Gray,
Man. ed. 2. 611. 1856.
Sphagnum microcar pum Wamst. Hedwigia 30: 170. 1891. Sphagnum Alabamae Wamst. Hedwigia 47: 94. 1907.
Plants low, erect or procumbent, green or more or less tinged with brown. Wood-cylinder generally brown; cortical cells of the stem in 1-2 layers, very large and thin-walled, the outer cells quadrilateral, generally longer than wide, often with a pore in the upper end; stem-leaves isophyllous, as branches are usually lacking, or if present mostly single, thick, ascending: leaves oval to ovate, faintly toothed across the rounded apex, the border weak, of 1-2 rows of narrow cells; hyaline cells fibriUose throughout, 10-12 times as long as wide in the central portion, shorter toward the base and apex to 5-6 times, on the inner surface mostly with a few pores in the ends and comers of the cells, 2-5 per cell, on the outer surface with very minute round pores near the commissures, up to 20 or more per cell, sometimes reduced in number or larger in size: chlorophyl-cells in section mostly trapezoidal with broader exposure on the inner surface, the lumen triangular, the walls thin; hyaline cells not convex on the inner surface, very slightly so on the outer, not more than ore eighth to one sixth of the diameter of the cell.
Dioicous. Fruiting branches short; perichaetial leaves large, ovate, with both kinds of cells throughout, the hyaline cells all fibriUose: capsule rather small, dark-brown; pseudopodium short; wall of the capsule with or without pseudostomata : spores yellow, 25-35/1 in diameter, granular-roughened.
Type locality: Alabama.
Distribution: New Jersey to Florida, Alabama, and Louisiana; also in Brazil.