9. Schwetschkea C. Müll. 附干藓属 fu-gan xian shu
Linnaea 39: 429. 1875.
Plants slender to very slender, green, slightly glossy, in interwoven patches. Stems creeping, ascending at apex; usually pinnately branched; branches short, erect or erecto-patent, curved when dry; rhizoids in bundle; central strand not differentiated. Leaves dense, erect, sometimes secund when dry, erecto-patent when moist, ovate- lanceolate, acuminate above; leaf margins plane, serrulate; costa single, weak, ending in the middle of leaf; leaf cells oblong-elliptic or oblong-hexagonal; basal cells broader; alar cells quadrate, in several rows. Autoicous. Inner perichaetial leaves ovate-lanceolate, suddenly narrowed to a piliferous apex. Setae delicate, twisted when dry, reddish brown, rough or smooth above; capsules erect, oblong ovoid, constricted below the mouth when dry; opercula conic, with a long, oblique beak; annuli differentiated; peristome double; exostome teeth lanceolate, yellowish brown, somewhat lamellate below the middle, smooth, papillose above; endostome segments narrowly lanceolate, as long as exostome teeth, keeled, papillose; basal membrane low or moderately high; cilia absent. Spores medium-sized.