Monographs Details: Cyclodictyon
Authority: Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)
Family:Pilotrichaceae
Scientific Name:Cyclodictyon
Description:Genus Description - Plants soft and delicate, slender to medium-sized, in shiny, sometimes iridescent, whitish-green, dark-green, reddish, or brownish flat mats. Stems creeping, sparsely radiculose, irregularly pinnate-branched. Leaves inserted in 5-8 rows, complanate, often shriveled and ± crisped when dry, asymmetric, broadly oblong-ovate and abruptly narrowed to a short or fairly long acumen, rarely ovate-lanceolate and gradually acuminate; margins entire or serrulate near the apex; costae 2, divergent, ending above the leaf middle; cells lax and thin-walled, transparent, smooth, hexagonal or oblong-hexagonal, linear in 1 -several rows at the margins forming a hyahne border, oblong or rhomboidal at base. Perichaetial leaves small, ovate or lanceolate, short- to fairly long-acuminate. Setae elongate, dark-red, smooth; capsules inclined to horizontal, oblong-cylindric with a short neck, smooth; annulus narrow; operculum straight and long-rostrate from a conic base; exothecial cells not collenchymatous; exostome teeth dark-red or red-brown, lance-subulate, broadly furrowed, cross-striolate below, papillose above, bordered, trabeculate; endostome yellow-brown, finely papillose, the basal membrane high, the segments lanceolate, keeled, perforate, about as long as the teeth, and cilia none. Calyptrae scarcely longer than the opercula, smooth, naked.

Discussion:

Buck (1987a) referred the aquatic Lepidopilum subtortifoliumBartr. (described from Guatemala) to the genus Cyclodictyon, as C. subtortifolium (Bartr.) Buck.