Fissidens Moss

Description

Plants very small, delicate, pale green, loosely gregarious. Leafy stems simple, 1.2-3.2 mm long, 0.8-3.0 mm wide; axillary hyaline nodules not differentiated; central strand lacking. Leaves in 2-5 pairs, densely arranged, upper leaves much larger than lower leaves, oblong-lanceolate to oblong-ovate, 0.6-1.4 mm - 0.2-0.6 mm, acute at the apex; base of dorsal laminae rounded, vaginal laminae nearly 1/2 the leaf length; costa absent; margins plane, entire, bordered throughout by 1-2 rows of elongate cells; cells of apical laminae quadrate to irregularly hexagonal, 35-87 -m long, smooth, thin-walled; cells of vaginant laminae similar to those of apical laminae. Sporophytes unknown.