6. Pylaisia robusta Broth. & Par. 大金灰藓 da jin hui xian
Rev. Gen. Bot. 30: 350. f. 2. 1918. Pylaisiella robusta(Broth. & Par.) C. Gao & K.-C. Chang, J. Hattori Bot. Lab. 54: 202. 1983. Type: Japan.
Plants yellowish green. Stems densely irregularly branched or irregularly pinnately branched. Leaves ovate-lanceolate, shortly acuminate at apex; margins entire; costae double, very short or indistinct; leaf cells narrowly rhomboidal, smooth; alar cells numerous, quadrate, in 10–11 rows along the margins. Setae about 10 mm long, yellowish brown, twisted when dry, smooth; capsules erect, oblong-ovoid; peristome double; exostome teeth lanceolate, yellowish, smooth or only papillose at the tips on the dorsal surface, densely trabeculate on the ventral surface; endostome segments longer than the teeth, adherent to the teeth in the lower half, usually split at the tips. Spores about 18–24 µm in diameter.