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Moss China | Family List | Moss China V. 1 | Dicranaceae | Dicranodontium

2. Dicranodontium denudatum (Brid.) Britt. Ex Williams, N. Amer. Fl. 15: 151. 1913; Dicranum denudatum Brid., Spec. Muscol. Recent. Suppl. 1: 184. 1806.


Dicranodontium longirostre (Web. & Mohr) Bruch & Schimp. in B.S.G., Bryol. Eur. 1: 158. (fasc. 41. Mon. 2.1). 1847. Swartzia longirostra (Web. & Mohr) Brid. in Röhl., Ann. Wetterauischen Ges. Gesammte Naturk. 3(2): 203. 1814. Didymodon longirostre Web. & Mohr, Bot. Taschenb. 155. 1807. Dicranodontium uncinatulum C. Müll. in Jaeg., Ber. Thätigk. St. Gallischen Naturw. Ges. 1877–78: 381. 1880.

Plants small to rather large, 1–3(–5) cm high, deep green to yellowish green, in slightly silky, dense tufts. Stems erect or ascending, simple or sparsely branched, densely foliate above, radiculose below; central strand present. Leaves distinctly deciduous in sections, flexuose or falcate-secund when dry, erect-spreading when moist, linear-lanceolate, 2.5–5.0(–8.0) mm long, gradually tapered from an oblong-ovate, not clearly sheathing base to a long, setaceous, semi-canaliculate acumen; margins plane or slightly incurved above, entire below or serrulate in the upper half or only at the apex; costa pellucid, poorly delimited at leaf base, occupying 1/3– ½ the leaf base width, long-excurrent, smooth at back; upper cells long-rectangular, linear near the apex; lower cells rectangular, 18–30 µm × 4–8 µm, firm-walled, becoming shorter and narrower towards the margins, not forming clear marginal bands; alar cells forming somewhat auriculate base, short-rectangular to quadrate, inflated, hyaline or sometimes reddish brown. Dioicous. Setae flexuose when dry, cygneous when moist, 5–10 mm long, yellowish; capsules suberect to slightly inclined, cylindric, 1.0–1.2 mm × 0.5–0.6 mm, yellowish brown; opercula long-rostrate, slightly shorter than the urns; annuli absent; peristome teeth lanceolate, ca. 0.2 mm long, divided about to the middle, vertically striate and reddish. Calyptrae ca. 1.5 mm long, entire at base. Spores 10–14 µm in diameter.

Syntypes. Germany: Dietharz Thuringiae & Bugesiae montibus, Déjean s.n.; Switzerland: Helvetia, Schleicher s.n.

Chinese specimens examined: FUJIAN: Huanggang Shan (Mt.), P.-J. Lin 2343 (IBSC, IFSBH); Wuyi Shan (Mt.), D.-K. Li 10986 (IFSBH, SHM). GUANGDONG: Lian-ping Co., P.-J. Lin 1330 (IBSC, IFSBH); Ru-yuan Co., P.-J. Lin 553 (IBSC, IFSBH); Shi-xing Co., P.-J. Lin 4869 (IBSC, IFSBH). GUANGXI: Long-sheng Co., P.-C. Wu & Y.-X. Lin 454 (IFSBH, PE), P.-C. Wu et al. 787-1 (MO); Xing-an Co., C. Gao & G.-C. Zhang 1891 (IFSBH). GUIZHOU: Leigong Shan (Mt.), S.-Z. Jiang 10726 (IFSBH, MO); Sui-yang Co., C. Gao & J.-Y. Feng 33371, 33647 (IFSBH). HEILONGJIANG: Hai-lin Co., C. Gao & G.-C. Zhang 9158, 9172 (IFSBH); Ning-an Co., C. Gao 9158 (MO); Xiao Xing An Ling (Lesser Khingan Mt.), P.-C. Chen & C. Gao 6, 57 (IFSBH), C. Gao 416, 8016 (MO). HUBEI: Hui-long Shan (Mt.), L.-J. Bi 2-0033 (IFSBH). JILIN: An-tu Co., T. Cao 42062 (MO); Chang-bai Co., C. Gao 7345 (IFSBH, MO); Wang-qing Co., C. Gao 8986 (IFSBH, MO). NEI MONGOL: Da Xing An Ling (Greater Khingan Mt.), C. Gao 1020 (IFSBH). SHANDONG: Tai-an Co., C. Gao & E.-Z. Bai 34118 (IFSBH). SICHUAN: Ba-tang Co., S. He 31556 (MO); Dao-cheng Co., S. He 31847 (MO, PE); Omei Shan (Mt.), C. Gao et al. 19625 (IFSBH, MO), D. Jin 19566 (IFSBH); Ma-er-kang Co., S. He 31153 (MO); Mu-li Co., C. Gao 20593, 20955 (IFSBH, MO); Nan-chuan Co., M.-Z. Wang 860223 (MO); Nan-ping Co., S. He 30284 (MO, PE); Ruo-er-gai Co., S. He 30624 (MO, PE); Song-fan Co., S. He 30496 (MO, PE); Tian-quan Co., C. Gao 18410 (IFSBH, MO). TAIWAN: Ping-dong Co., C.-C. Chuang 1553, 1558 (UBC); Tai-chung Co., S.-H. Lin s.n. [Bryophytes of Taiwan Exsiccatae 161] (MO). XIZANG: Bo-mi Co., Y.-G. Su 933(c) (IFSBH, KUN); Ji-long Co., S.-K. Chen 329 (IFSBH, KUN); Cha-yu Co., M.-Z. Wang 8792 (IFSBH, PE); Lang-xian Co., M. Zang 1914 (IFSBH, KUN); Nie-la-mu Co., S.-K. Chen 179 (KUN); Sa-nan-qu-lin, M. Zang 543 (IFSBH, KUN); Ya-dong Co., M. Zang 571(b) (IFSBH, KUN). YUNNAN: Gong-shan Co., M.-Z. Wang 10007(a) (IFSBH, PE); Jin-dong Co., J.-K. Zhang 1497 (IFSBH, YUKU); Kunming City, W.-X. Xu 81 (IFSBH, YUKU); Li-jiang Co., W.-X. Xu 453 (IFSBH, YUKU); Lu-feng Co., Redfearn 1786 (MO); Lu-shui Co., J.-X. Luo & M.-Z. Wang 81216(a) (IFSBH, PE); Wei-xi Co., M.-Z. Wang 5089(b) (PE). ZHEJIANG: Sui-chang Co., Z.-L. Liu 1805 (IFSBH, SHM), R.-L. Hong 1713 (IFSBH, SHM); west Tian-mu Shan (Mt.), R.-L. Hu 130 (IFSBH, HSNU, MO).

Habitat: on rotten logs and soil or thin-soil over rocks; Distribution: China, Nepal, India, Japan, Russia, Europe, and North America.

Illustrations: C. Gao (ed.) 1994 (Pl. 81, figs. 9–13).


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