2. Abietinella hystricosa (Mitt.) Broth. 美丽山羽藓 mei-li shan-yu xian
Nat. Pflanzenfam. (ed. 2), 11: 327. 1925. Thuidium hystricosum Mitt. in Seemann, J. Bot. 1: 356. 1863. Type. England.
Plants usually fairly robust to robust, up to 10 cm long, rarely slender, yellowish green or dark green, brownish at lower portion, in densely tufted cushions. Stems ascending or erect, 0.65 mm in diameter, regularly pinnately branched; branches rigid, apex obtuse, 7–15 mm long; central strand present; paraphyllia numerous, foliose or filamentous, branched, smooth. Stem leaves ovate-oblong, gradually narrowed to a lanceolate acumen, weakly plicate, often secund, ca. 3.0 mm × 1.0–1.5 mm; leaf margins finely serrulate; costa up to 3/4 the leaf length, coarsely papillose on back; leaf cells narrowly oval, smooth or unipapillose; branch leaves narrowly ovate, concave, slightly plicate, sometimes indistinctly multipapillose; median cells hexagonal or rhomboidal, smooth, rarely minutely unipapillose. Sporophytes not seen.