5b. Fissidens bryoidesvar. esquirolii (Thér.) Z. Iwats. & T. Suzuki 小凤尾藓厄氏变种 xiao feng-wei xian e-shi bian-zhong
J. Hattori Bot. Lab. 51: 361. 1982. Fissidens esquirollii Thér., Bull. Acad. Int. Géogr. Bot. 18: 251. 1908. Type. China: Guizhou (Kouy-Tcheou), 19 XI 1904, Esquirol 281 (isotypes H-BR, S).
Fissidens shinii Sak., J. Jap. Bot. 27: 279. 1952.
Fissidens yamamotoi Sak., Bot. Mag. (Tokyo) 56: 218. 1942.
Plants small, light green to green. Fertile and sterile plants often differentiated. Sterile leafy stems 1.4–2.1 mm long, 0.7–0.9 mm wide, with 5–9 pairs of leaves. Fertile leafy stems 1.8–2.4 mm long, 0.8–1.1 mm wide, with ca. 3 pairs of leaves. Stems simple; central strand lacking; axillary hyaline nodules not differentiated. Sterile stem leaves oblong-lingulate to oblong-lanceolate, 0.14–0.60 mm × 0.07–0.10 mm, rounded acute to obtuse at apex. Fertile stem leaves lanceolate, 0.6–0.7 mm long, ca. 0.2 mm wide, obtuse to acute at apex; base of dorsal laminae of both sterile and fertile stem leaves wedge-shaped; costa ending a few cells below leaf apex; margins serrulate; vaginant laminae 1¤2 – 3¤5 the leaf length; limbidia very weak, usually found only on vaginant laminae of perichaetial and perigonal leaves; cells of apical and dorsal laminae quadrate to hexagonal, 7–14 µm long, thin-walled, smooth; cells of vaginant laminae similar to those of apical and dorsal laminae, larger and longer toward the base. Rhizautoicous. Male inflorescences bud-like, at base of female stems, rarely terminal on lateral short branches. Perichaetial and perigonal leaves differentiated, much longer than other leaves. Archegonia 142–185 µm long. Setae terminal, 2.5–3.1 mm long; capsules erect, symmetrical, with urns 0.4–0.5 mm long; opercula long conic-rostrate, 0.2–0.3 mm long; exothecial cells quadrate to short oblong, rather thin-walled; peristome teeth ca. 0.1 mm long, ca. 35 µm wide at base. Spores 11–14 µm in diameter.