12. Didymodon pallidobasis (Dix.) X.-J. Li & Iwats., comb. nov. 浅基对齿藓 qian-ji dui-chi xian
Barbula pallido-basis Dix., Rev. Bryol. Lichénol. 7: 107. 1934. Type. China: Liaoning, Sheng-yang City, 23 July 1933, Iwasaki 10033 (isotype TNS).
Plants small, 5–8 mm high, dark green to yellowish green, in dense tufts. Stems erect, simple; central strand weakly differentiated. Leaves crisped-flexuous when dry, reflexed or somewhat squarrose when moist, narrowly lanceolate to linear-lanceolate, 1.3–2.0 mm × 0.2–0.4 mm, bluntly acuminate at the apex; margins entire, recurved; costa stout, percurrent, sometimes shortly excurrent, abaxial superficial cells of costa rectangular, smooth; medium and upper leaf cells irregularly quadrate to more or less hexagonal, 6–10 µm × 6–10 µm, pluripapillose; basal cells rectangular, 14–48 µm × 6–12 µm, smooth, hyaline. Sporophytes unknown.