21. Brachythecium pendulum Takaki 悬垂青藓 xuan chui qing xian
J. Hattori Bot. Lab. 15: 27. 1955. Type: Japan. Honshu, Pref. Okayama, Takaki 16288.
Plants rather large, glossy, in loose mats. Stems elongate, to ca. 6 cm long, pendulous, irregularly or subpinnately branched, sparsely foliate, with short branches, rarely continuously branched, attenuate at tips. Stem leaves small, triangular-lanceolate, 0.57–1.40 mm × 0.36–0.45 mm, not plicate or concave, slenderly acuminate at apex, slightly decurrent at base; margins nearly serrulate throughout; costae weak, slender, ending at mid-leaf; median leaf cells linear, 58–90 µm × 5–7 µm, with angled ends, thin-walled; alar cells few, shortly rectangular, 30–35 µm × 10–13 µm; branch leaves distinctly larger than stem leaves, oblong-ovate or elliptical, 1.71–2.21 mm × 0.45–0.72 mm, rather abruptly narrowed to a shortly acuminate apex, clearly concave; margins often incurved in the middle; costae ending at 2/3 the leaf length. Sporophytes not seen.