6. Thuidium kanedae Sak. 短肋羽藓 duan-le yu xian
Bot. Mag. (Tokyo) 57: 345. 1943. Type. Japan: Kumamoto Pref., Sakurai 11380.
Thuidium toyamae Nog., J. Jap. Bot. 23: 115, f. 38. 1949.
Plants usually large, up to or more than 10 cm long, yellowish green to light green, brownish when old, in loosely interwoven mats. Stems regularly bi- to tripinnately branched; branches up to 1.5 cm long; central strand differentiated; paraphyllia densely on stems and branches, foliose or filamentous, branched, apex 2–4 cells long, papillose. Stem leaves appressed when dry, triangularly ovate to triangular, about 3 mm long, lanceolate toward piliferous apex, consisting of 3–10 cells; margins nearly plane to revolute, serrate above; costa stout, ending below leaf apex, setulosely papillose on back; median leaf cells rounded rhomboidal to oblong, 5–20 µm long, usually stellately papillose (2–4 papillae), rarely unipapillose; branch leaves concave, ovate to elliptic, with a short acute apex, ca. 1 mm long; margins serrate; costa reaching 2/3–4/5 the leaf length; with 2–4 papillae or single stellate papilla. Dioicous. Perichaetial leaves long ciliate above. Setae reddish brown to brown, up to or more than 3 cm long; capsules cylindrical, horizontal; 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 15–20 µm in diameter, finely papillose.