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

6. Didymodon eroso-denticulatus (C. Müll.) Saito, J. Hattori Bot. Lab. 39:504. 1975; Barbula eroso-denticulata C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 3: 102. 1896.


Prionidium eroso-denticulatum (C. Müll.) P.-C. Chen, Hedwigia 80: 226. 1941. Barbula trachyphylla C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 4: 259. 1897. Type. China: Shaanxi (Schen-si), Tsing-ling, Sche-kin-tsuen (Hu-schien), Dec. 1895, P. J. Giraldi s.n. Prionidium setschwanicum (Broth.) Hilp., Beih. Bot. Centralbl. 50(2): 641. 1933. Morinia setschwanica (Broth.) Broth., Nat. Pflanzenfam. (ed. 2) 11: 528. 1925. Leptodontium setschwanicum Broth., Akad. Wiss. Wien Sitzungsber., Math.-Naturwiss. Kl., Abt. 1, 131: 211. 1922. Type. China: Sichuan (Setschwan), Mt. Lose-schan, Handel-Mazzetti 1404 (holotype H).

Plants small to medium-sized, sometimes large, 10–40(–80) mm high, dark green to somewhat brownish, in loose or dense tufts. Stems erect or slantingly erect, usually branched. Leaves appressed when dry, strongly squarrose when moist, ovate-lanceolate, often longitudinally plicate and keeled; margins entire in the lower part, coarsely toothed in the upper part, usually not revolute; costa stout, ending just below the apex; upper leaf cells rounded quadrate to rounded hexagonal, thick-walled, with high, sometimes blunt papillae; basal cells oblong-rectangular to oblong-elliptic, usually papillose. Sporophytes unknown.

Type. China: Shaanxi (Schen-si), Huo-gia-ziez, Sept. 1890, P. J. Giraldi 982 (isotype H).

Specimens examined: HUBEI: Sheng-nong-jia (Mt.), K.-Y. Guan 80–2751 (HKAS). SHAANXI: Hu Co., M. Wang 218, 447, 482, 634 (HKAS); Qing-ling (Mt.), P. J. Giraldi 1390 (H). SICHUAN: Dao-cheng Co., M.-Z. Wang 814241 , 814267 (PE); De-rong Co., X.-J. Li 81–2882 (HKAS); Mu-li Co., Handel-Mazzetti 806, 809 (H); Wen-chuan Co., J.-X. Luo 3448c (PE). TAIWAN: Tong-xiao, Iwatsuki & Sharp 956 (NICH). XIZANG: Cuo-na Co., S.-K. Chen 5166 (HKAS); Ji-long Co., S.-K. Chen 224 (HKAS); Ya-dong Co., S.-K. Chen 5056a (HKAS). YUNNAN: Bin-chuan Co., M.-K. Cui 757b (HYUB); Da-rao Co, S. Ten 108 (H); Li-jiang Co., X.-J. Li 80102 (HKAS); Yun-ling, Handel-Mazzetti 7057 (H); Zhong-dian Co., Ni-xi, X.-J. Li 81–1613 (HKAS).

Habitat: on rocks or soil over rocks in forests or on river banks; Distribution: endemic to China.

Illustrations: Pl. 118, figs. 10–14.


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