1. Scopelophila cataractae (Mitt.) Broth., Nat. Pflanzenfam. I(3):436. 1902; Weissia cataractae Mitt., J. Linn. Soc., Bot. 12: 135. 1869.
剑叶舌叶藓
Merceya cataractae (Mitt.) C. Müll., Gen. Musc. Frond. 384. 1900.
Merceya gedeana (Sande Lac.) Nog., Kumamoto J. Sci., Sect. 2, Biol. 2: 247. 1956. Pottia gedeana Sande Lac., Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk. 13: 4. 2 B. 1872.
Merceyopsis formosica Broth. ex Sak., Bot. Mag. (Tokyo) 48: 386. 1934. Type. China: Taiwan, Tai-chiu, Horigai, Sasaoka 1709.
Merceyopsis sikkimensis (C. Müll.) Broth. & Dix., J. Bot., 48: 301, f. 7. 1910. Scopelophila sikkimensis C. Müll. in Ren. & Card., Bull. Soc. Roy. Bot. Belgique 41(1): 53. 1905.
Plants small to medium-sized to rather large, to 2 cm high, soft, green to yellowish green or brownish, in loose or dense tufts. Stems erect, simple or rarely branched. Leaves strongly crisped when dry, spreading when moist, ca. 2–3 mm long, lingulate or ligulate to elliptic-lanceolate, narrowed at the base, slenderly to broadly acute; margins plane or somewhat recurved below, entire; costa slender, percurrent; upper leaf cells rounded-quadrate to irregularly hexagonal, thin- to moderately thick-walled, smooth; basal cells short-rectangular, somewhat enlarged, rather thin-walled, smooth. Setae ca. 3–4 mm long; capsules erect, short-cylindrical with a narrowed mouth.
Type. Ecuador: Agoyán, Spruce 45c.
Chinese specimens examined: ANHUI: Huang Shan (Mt.), D.-K. Li 2252 (HKAS, SHM). FUJIAN: Xia-ming City, D.-K. Li 15407 (HKAS, SHM). GANSU: Wen Co., Z.-P. Wei 6805 (HKAS, WUG). GUANGXI: Shang-si Co., C. Gao 2140 (HKAS, IFSBH). HUNAN: Da-rong Co., D.-K. Li 18015 (HKAS, SHM). JIANGSU: Chang-shu City, D.-K. Li 17462 (HKAS, SHM); Nan-jing City, D.-K. Li 16561 (HKAS, SHM). JIANGXI: Jing-gang Shan (Mt.), D.-K. Li 17253 (HKAS, SHM). LIAONING: Qian Shan (Mt.), C. Gao 1947 (HKAS, IFSBH). SHAANXI: Hu Co., M. Wang 632
(HKAS). SICHUAN: Mi-yi Co., K.-K. Chen 16166 (HKAS); Omei Shan (Mt.), D.-K. Li 15562 (HKAS, SHM); Xiang-cheng Co., Sichuan Veg. Team 4454 (HKAS). TAIWAN: Hsin-chu City, C.-K. Wang 1675 (NICH); Kao-hsung City, C.-K. Wang 0983 (NICH). XIZANG: Ji-long Co., S.-K. Chen 251 (HKAS); Lin-zhi Co., Xizang Team 5b (HKAS); Long-zi Co., San-an-qu-lin, M. Zang 1394 (HKAS); Mo-tuo Co., Y.-G. Su 4502 (HKAS). YUNNAN: Gong-shan Co., M. Zang 1322, 3631 (HKAS), M.-Z. Wang 11142 (PE); Teng-chong Co., X.-J. Li 80374 (HKAS); Yu-long Mt., X.-J. Li 4466 (HKAS).
Habitat: on rocks or thin soil over rocks; Distribution: China, Korea, Japan, Nepal, India, Indonesia, the Philippines, North and South America.
Illustrations: C. Gao (ed.) 1996 (Pl. 77, figs. 1–2, as Merceyopsis sikkimensis).
