Barbula constricta Mitt.

The plant is 10–25 mm in height, reddish brown to yellowish green, small to medium in size and in loose or dense tufts. The stems are simple, rarely branched, erect, foliate and the central stand is absent. The leaves are involute when dry and when moist are erect-speading. The leaf shape ranges from ovate to lanceolate and the area is 0.9–1.5mm x 0.3–0.4 mm, the leaf starts from an abruptly narrow to a broad ovate base to a setaceous apex. The margins are revolute, costa stout, percurrent to shortly excurrent and entire. The upper leaf cells are rounded triangular to hexagonal in shape. Their size ranges from 8–12 µm x 8–10 µm, irregularly thick-walled and several low papillae. They sometimes appear to be mammillose or smooth, the basal cells are short and rectangular, 8–18 µm × 6–10 µm, smooth, thin-walled, hyaline and diocious. The setae are 9–20 mm in length, yellowish brown to reddish in color, not twisted, cylindrical and not twisted. The capsules are erect, cylindrical, opercula are obliquely long and rostrate. The peristome teeth are twisted several times counterclockwise and are filiform. The spores are minutely papillose and greenish in coloration.