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Moss China | Family List | Moss China V. 2 | Pottiaceae | Anoectangium

1. Anoectangium aestivum (Hedw.) Mitt., Journal of the Linnean Society, Botany. 12:175. 1869; Gymnostomum aestivum Hedw., Sp. Musc. Frond. 32, 2 f. 4–7. 1801.


Anoectangium compactum Schwaegr., Sp. Musc. Frond., Suppl. 1, 1: 36. 1811, nom. illeg. Anoectangium euchloron (Schwaegr.) Mitt., J. Linn. Soc., Bot. 12: 176. 1869. Gymnostomum euchloron Schwaegr., Sp. Musc. Frond., Suppl. 2, 2: 83. 1827.

Plants slender, light green to yellowish green, (5–)10–20 mm high, in dense tufts or cushions. Stems erect, simple. Leaves densely arranged, 1.0–1.7 mm x 0.2–0.3 mm, appressed when dry, erect-spreading when moist, broadly lanceolate, keeled at the upper parts, gradually acuminate to acute at the apex; margins plane, entire or crenulate at shoulder portion of the leaf base; costa strong, ending below the apex, never excurrent; upper cells irregularly quadrate, 5–8 µm x 6–10 µm, with large, rounded, dense papillae; basal cells oblong-quadrate to linear-rectangular, hyaline, smooth, thick-walled, occasionally papillose, but always smooth near the costa. Setae 0.5–1.5 cm long, yellowish; capsules cylindrical or oblong-obovoid. Spores dull yellowish, smooth.

Type. Europe.

Chinese specimens examined: ANHUI: Huang Shan (Mt.), D.-K. Li 611 (SHM). FUJIAN: Wuyi Shan (Mt.), X.-J. Li 252 (HKAS). HEILONGJIANG: Ning-an Co., X.-L. Zhu 260 (MO, PE); Xiao Xing An Ling (Lesser Khingan Mt.), C. Gao s.n. (IFSBH). HENAN: An-yang Co., H.-J. Yu 1032 (HKAS); Hui Co., H.-J. Yu 1012 (PE); Xi-xia Co., Z.-Z. He 6816 (PE). JIANGSU: Nan-jing City, M. Zang 18828 (HKAS); Zheng-jiang City, Z.-L. Liu 33208 (HKAS, SHM). JILIN: Lao-ye Ling (Mt.), C. Gao 1562 (IFSBH). LIAONING: Ben-xi Co., C. Gao s.n. (IFSBH). SHAANXI: Hu Co., Z.-P. Wei 4561 (HKAS, WUG). SHANDONG: Tai Shan (Mt.), C. Gao 34025 (IFSBH). SICHUAN: Lu-ding Co., Y. Xuan 200 (HKAS); Mu-li Co., Y. Xuan 17828 (HKAS); Xiang-cheng Co., X.-J. Li 812804 (HKAS). TAIWAN: Hwa-lien Co., C.-C. Chuang 5642 (MO). YUNNAN: Bing-chuan Co., M.-K. Cui 962 (HYUB, HKAS); Kun-ming City, C.-Y. Yang 383 (PE); Wei-xi Co., J. Winter 34 (H). XIZANG: Ka Nu La Glacier, M. Zang 820 (HKAS); Ji-long Co., J.-W. Zhang 7512(2) (HKAS); Lang Co., M. Zang 1687 (HKAS); Mo-tuo Co., Y.-G. Su 2597 (HKAS); Lang-zi Zhun-ba, M. Zang 1066 (HKAS); Ya-dong Co., M. Zang 89 (HKAS). ZHEJIANG: Xi-Tian-mu-shan (Mt.), M. Zang 211 (HKAS).

Habitat: on rocks or rock crevices in alpine and subalpine regions; Distribution: China, Japan, India, the Philippines, New Zealand, Europe, and North and South America.

This species is characterized by its ovate-lanceolate leaves, costa always ending below the leaf apex, and leaf margins crenulate at the base.

Illustrations: C. Gao (ed.) 1996 (Pl. 46, figs. 8–11).


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