车氏凤尾藓

Fissidens xiphioides Fleisch., Hedwigia 38 (Beibl): 125. 1899.

Plants small. Leafy stems usually simple, rarely branched, 1.8–2.3 mm long, 1.4–2.5 mm wide; axillary hyaline nodules differentiated; central strand not differentiated. Leaves in 4–7 pairs, the lowest leaves much smaller than the upper leaves; middle to upper leaves oblong-lanceolate to lanceolate, 1.2–1.5 mm × 0.2–0.3 mm, slightly acuminate at apex; base of dorsal laminae rounded to broadly wedge-shaped; vaginant laminae ca. 1/2 the leaf length; margins nearly entire, limbidia along the whole margin, uniformly 1–2 cells wide, except 3–4 cells wide on the lower half of the vaginant laminae; costa light yellow, stout, shortly excurrent; cells of apical and dorsal laminae irregularly hexagonal, 9–21 µm long, thin-walled, smooth; cells at base of vaginant laminae much larger than those of apical and dorsal laminae, up to 42 µm long, 18 µm wide. Synoicous. Archegonia terminal on main stems of lateral branches. Setae 2.0–3.3 mm long, smooth; capsules erect, symmetrical; urns ca. 0.6 mm long.

Type. Indonesia: Java, Zollinger 1604 (holotype PC).

Chinese specimens examined: GUANGDONG: Dong-guan Co., Hueck s.n. (JE); Guang-zhou City, H. Wu 20 (MO). HAINAN: Ya Co., Z.-H. Li & Y.-Y. Yang 322 (IBSC, SYS). SHANGHAI: Shang-hai Co., S.-M. Xu 140 (MO). TAIWAN: Ping-tung Co., S.-H. Lin 10815 (NICH, TUNG).

Habitat: on soil; Distribution: China, widely distributed in southwestern Asia and Oceania, New Zealand, and South and North America.

In China, this species was called Fissidens xiphioides by P.-C. Chen et al. (1963).

Illustrations: Z.-H. Li 1985 (Fig. 4, j–q).