缺齿小石藓

Hymenostomum edentula (Mitt.) Besch., Bull. Soc. Bot. France 34: 95. 1887. Hymenostomum leptotrichaceum (C. Müll.) Par., Index Bryol. Suppl. 189. 1990. Weissia leptotrichacea C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 4: 259. 1897. Type. China: Shaanxi (Schen-si), Mt. La-y-san, Mar. 1896, J. Girald 1532. Weissia platyphylloides Card., Beih. Bot. Centralbl. 19(2): 90. 2. 1905. Type. China: Taiwan (Formosa), Tamsui, Faurie 86 (isotype H). Weissia semipallida C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 5: 185. 1898. Type. China: Shaanxi (Schen-si), Sche-kin-tsuen, 3 IV 1897, P. J. Giraldi 2075 (isotype H).

Plants small, to 10 mm high, dark green, in dense tufts. Stems erect, usually irregularly branched. Leaves often crowded at stem tips, contorted-curved when dry, spreading when moist, narrowly lanceolate, ca. 3 mm long, sheathing at base, upper lamina often channeled, acuminate at apex; margins moderately incurved, entire or crenulate by projecting papillae; costa rather stout, shortly excurrent, ending in sharply mucronate tips; upper leaf cells subquadrate to rounded hexagonal, evenly thick-walled, densely pluripapillose; basal cells sharply differentiated, rectangular or oblong-elliptic, mostly thin-walled, smooth, hyaline. Autoicous. Setae straight, ca. 6 mm long; capsules erect, oblong-ovoid, ca. 1 mm long; annuli none; peristome none.

Type. India: Madras, Wight s.n.

Chinese specimens examined: ANHUI: Da-bie Shan (Mt.), N.-W. Zhu 20014 (HKAS); Huang Shan (Mt.), W.-F. Zheng 337 (HKAS). FUJIAN: Wuyi Shan (Mt.), P.-C. Chen 985 (HKAS); Xia-ming City, D.-K. Li 10883 (HKAS, SHM). GUANGDONG: Ding-hu Shan (Mt.), P.-C. Wu 40365 (PE). GUIZHOU: Shui-cheng Co., D.-K. Li 2929 (SHM). HEILONGJIANG: Fu-yuan Co., C. Gao 6311 (IFSBH); Lin-yuan Co., C. Gao 1263 (HKAS, IFSBH); Yi-chun City, Z.-W. Ao 830019 (HKAS). HENAN: Ji-gong Shan (Mt.), J.-X. Luo 99 (MO, PE); Kai-feng City, D.-K. Li 6459 (SHM); Nei-xiang Co., J.-X. Luo 129 (MO, PE); Xin-yang City, J.-X. Luo 140 (PE), W.-L. Xiong 607 (PE); Xi-xia Co., Z.-Z. He 6814 (PE). HUNAN: Sang-zhi Co., D.-K. Li 18522 (HKAS, SHM). JIANGSU: Ru-dong Co., M. Zang 8 (HKAS); Tang Shan (Mt.), M. Zang 11 (HKAS); Wu Co., Z.-L. Liu 32532 (HKAS, SHM). JIANGXI: Lu Shan (Mt.), D.-K. Li 17384 (HKAS, SHM). JILIN: An-tu Co., C. Gao 1291 (IFSBH); Chang-bai Shan (Mt.), C. Gao 1193 (HKAS, IFSBH). LIAONING: Ben-xi Co., C. Gao 3864 (HKAS, IFSBH); Heng-ren Co., T. Cao 205 (HKAS, IFSBH). NINGXIA: Niu-shou Shan (Mt.), S.-L. Liu 47 (PE). SHAANXI: Hu Co., M. Wang 287 (HKAS); Nan-wu-tai Shan (Mt.), C. Gao 16586 (HKAS, IFSBH). SHANDONG: Tai Shan (Mt.), C. Gao 34073 (HKAS, IFSBH). SHANGHAI: P.-C. Chen 5565 (HKAS). SICHUAN: Chong-qing City, P.-C. Chen 2021 (PE), D.-K. Li 16099 (SHM); Mu-li Co., P.-C. Li 24099 (HKAS); Yan-yuan Co., M.-Z. Wang 21828 (PE). TAIWAN: Nan-tou Co., Co., Koponen 17739 (H, HKAS). XINJIANG: Urumqi City, K.-L. Xia 1 (HKAS). XIZANG: Lang Co., M. Zang 1725 (HKAS); Lin-zhi Co., Z.-X. Tan 44b (HKAS). YUNNAN: Bin-chuan Co., M.-K. Cui 167 (HKAS); Lv-chun Co., M. Zang 892 (HKAS); Meng-la Co., L. Zhang 710 (HKAS); Rui-li Co., X.-J. Li 180 (HKAS). ZHEJIANG: Hang-zhou City, R.-L. Hu 275 (HKAS, HSNU); Ping-hu Co., D.-K. Li 3406 (HKAS, SHM); Pu-tuo Island, Z.-L. Liu 32595 (HKAS, SHM); western Tian-mu Shan (Mt.), R.-L. Hu 171 (HKAS, HSNU).

Habitat: on forest ground, tree bases, or on rocks and soil; Distribution: China, Vietnam, the Philippines, and Australia.

Illustrations: C. Gao (ed.) 1996 (Pl. 54, figs. 11, 12).