Sphagnum sect. Polyclada
J. Bot. 38: 119. 1900,.
Plants small to moderate-sized, with distinct capitulum; green, brown or variegated brown and red. Stems green to redbrown, superficial cortex of 2–4 layers of efibrillose, nonornamented, enlarged, short-rectangular cells. Stem-leaves smaller than branch leaves, triangular-lingulate, with rounded apex, border entire; hyaline cells efibrillose, nonornamented, rhomboid, septate; resorbed on convex surface; concave surface intact except near apex. Branches dimorphic, spreading branches stiff; pendent branches slender and delicate. Branch fascicles with 3 (–8) spreading and 3 (–8) pendent branches. Branch stems with distinct solitary retort cells, necks not or slightly rostrate. Branch leaves ovatelanceolate, apex involute, border entire; hyaline cells fibrillose and nonornamented, convex surface with 4–6 small ringed ovate pores (approximately 1/4 the diameter of the cell), concave surface with 0–4 unringed pores per cell; chlorophyllous cells elliptic to truncate-elliptic in transverse-section, qually exposed on both surfaces. Sexual condition monoicous or dioicous. Capsule with few pseudostomata. Spores 15–24 µm; finely papillose on both surfaces; proximal laesura less than 0.5 the length of the spore.
Distribution
North America, Eurasia
Discussion
Species 1.
Selected References
None.