5d. Fissidens bryoides var. ramosissimus Thér. 小凤尾藓多枝变种 xiao feng-wei xian duo-zhi bian-zhong
Ann. Crypt. Exot. 5: 167. 1932. Fissidens bryoides var. ramosissimus (Thér.) Z. Iwats. & T. Suzuki, hom. illeg., J. Hattori Bot. Lab. 51: 359. 1982. Type. China: Fujian (Fukien), Amoy, H. H. Chung 362.
Fissidens perexiguus C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 4: 245. 1897. Type. China: Shaanxi (Schen-si), IX 1894, P. J. Giraldi s.n. (isotype FI).
Fissidens ryukyuensis Bartr., The Bryologist 50: 160, figs. a–b. 1947.
Plants small, green to light green. Leafy stems ca. 4.5 mm long, 1.4 mm wide; simple or with many short branches; central strand lacking; axillary hyaline nodules not differentiated. Leaves in 2–9 pairs, upper leaves lanceolate, ca. 0.8 mm × 0.2 mm, acute at apex; base of dorsal laminae wedge-shaped, often ending above the leaf base, not decurrent; costa ending a few cells below leaf apex to percurrent; limbidia lacking on apical laminae of lower stem leaves, often 1–2 rows of cells on apical laminae of upper stem leaves and ceasing far below apex, 1–7 rows of cells on vaginant laminae; margins entire; vaginant laminae 3¤5 the leaf length, almost equal; cells of apical and dorsal laminae quadrate to hexagonal, 7–11 µm long, smooth; cells of vaginant laminae similar to those of apical and dorsal laminae, but thicker walled, larger and longer toward base. Autoicous or polyoicous. Female inflorescences terminal on stems and branches. Setae ca. 2.3 mm long, smooth; capsules symmetrical, urns ovate-cylindrical, 0.4 mm long, exothecial cells rectangular with thicker vertical walls; peristome teeth ca. 0.2 mm long, ca. 35 µm wide at base.