芮氏藓

Hymenostylium inconspicuum (Griff.) Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 33. 1859. Didymodon fortunatii Card. & Thér., Bull. Acad. Int. Géogr. Bot. 19: 18. 1909. Type. China: Guizhou (Kweitschow), Pin-fan, I. 1904, Fortunat 1683 (isotype PE). Hymenostylium diversirete Broth., Symb. Sin. 4: 32. 1929. Type. China: Yunnan, Yungning, Handel-Mazzetti 7058 (holotype H). Racopilum formosicum Horik., Bot. Mag. (Tokyo) 48: 458 f. 2. 1934. Type. China: Taiwan, Taito Co., Mt. Chipon, Dec. 29, 1932, Y. Horikawa s.n.

Plants medium-sized to rather large, to 4 cm high, green to yellowish brown, in loose tufts. Stems erect, simple or irregularly branched. Leaves in three ranks, loose, widely spreading when dry, reflexed to squarrose when moist, ovate-lanceolate, strongly keeled above, sheathing at the base, somewhat decurrent; margins plane, entire; costa stout, excurrent in a short awn; upper leaf cells quadrate to short-rectangular or irregularly hexagonal, smooth, somewhat hyaline, irregularly thick-walled, trigonous, weakly porose; basal cells linear-rectangular, several rows of cells at the margins linear, smooth, thick-walled, often porose. Setae elongate, 5–8 mm high; capsules erect, ovoid; opercula conic-rostrate, with a long, oblique beak.

Type. India: Khasia, Churra, Griffith 843.

Chinese specimens examined: SHANDONG: Yan-tai City, Faber 1272 (H). SICHUAN: Omei Shan (Mt.), Handel-Mazzetti 7058 (H); Tian-quan Co., Z.-L. Wu 12121 (HKAS). TAIWAN: Hua-lien Co., Shevock 15069 (MO). XIZANG: Mo-tuo Co., S.-K. Chen 98a (HKAS); Nie-la-mu Co., S.-K. Chen 128 (HKAS).

Habitat: on wet forest ground or rocks near waterfalls; Distribution: China, Nepal, India, and the Philippines.

Illustrations: Pl. 130, figs. 7–10.