9. Thuidium subglaucinum Card. 亚灰羽藓 ya hui-yu xian
Bull. Soc. Bot. Genève, ser. 2, 3: 283. 1911. Type. Korea: Quelpart, Faurie 701.
Plants large, but very delicate, ca. 10 cm long, brownish green to yellowish brown, in loosely interwoven patches. Stems ascending to nearly erect, irregularly to regularly bipinnately branched; central strand differentiated; paraphyllia numerous, foliose or filamentous, branched. Stem leaves involute when dry, widely ovate to ovate-triangular, with a short sharp apex, nearly 2 mm long; margins serrulate; costa reaching 3/4 the leaf length or ending below leaf apex, smooth or more or less papillose on the back; median leaf cells oval to oblong-oval, thick-walled, multipapillose; branch leaves ovate to widely ovate, reaching the middle of leaf length. Dioicous. Perichaetial leaves ovate-lanceolate, costa long excurrent, margins long ciliate on shoulder. Setae yellowish brown, ca. 2–3 cm long; capsules oblong-ovate; exostome teeth broadly lanceolate, reddish brown, papillose above; endostome segments as long as the exostome teeth, finely papillose; basal membrane about 1/2 the length of endostome segments; cilia 2–3. Spores 15–30 µm in diameter, finely papillose.