1. Abietinella C. Müll. 山羽藓属 shan-yu xian shu
Nuovo Giorn. Bot. Ital., n. ser. 3: 115. 1896.
Plants variable in size, depending on habitats, usually rather robust, up to 10 cm long, stout, yellowish green, not shining, in tufted lax cushions. Stems ascending, distinctly pinnately branched; paraphyllia dense, lanceolate or deeply lobed to filamentous; branches 1 cm long, apices usually obtuse, sometimes caudate; central strand present. Stem leaves and branch leaves differentiated; stem leaves cordate-ovate at base, gradually narrowed to a long lanceolate apex, multiplicate; margins grossly dentate; costa stout, vanishing at leaf apex; leaf cells oval-hexagonal to rhomboidal, coarsely unipapillose; branch leaves rather small, oblong-ovate, apices short. Dioicous. Inner perichaetial leaves ovate-lanceolate, deeply multiplicate. Setae slender, smooth; capsules cylindrical, arched; annuli present; opercula conic; peristome double; exostome teeth lanceolate, trabeculate, bordered; endostome segments nearly as long as the teeth; cilia absent. Calyptrae cucullate. Spores finely papillose.