1. Pylaisia brotheri Besch. 东亚金灰藓 dong-ya jin hui xian
Ann. Sci. Nat., Bot., ser. 7, 17: 369. 1893. Pylaisiella brotheri (Besch.) Iwats. & Nog., J. Jap. Bot. 48: 217. 1973. Type: Japan.
Plants slender to somewhat robust, yellowish green, somewhat glossy, in dense mats. Stems creeping, irregularly or more or less pinnately branched; leafy branches short, julaceous, curved when dry. Leaves dense, usually secund, ovate-lanceolate, somewhat concave, broader at base, slenderly acuminate toward apex, 1.2–1.4 mm × 0.5–0.6 mm; margins entire; costae double, very short or sometimes indistinct; leaf cells linear-rhomboidal, upper cells 31–51 µm × 3.9–6.6 µm, smooth; alar cells numerous, quadrate to irregularly hexagonal, in a group of 7–14 rows of cells along the margins. Autoicous. Setae reddish brown, 8–15 mm long; capsules erect, oblong-ovoid, about 1.5 mm long; opercula conic, shortly rostrate; annuli not well developed; peristome double; exostome teeth narrowly lanceolate, cross-striolate at base, more or less smooth above on dorsal surface; endostome segments adherent to the teeth below, free above the middle, nearly as long as the teeth, densely papillose, not perforate; basal membrane very low; cilia absent. Spores yellowish, 26–29 µm in diameter, minutely papillose.