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

2. Rhabdoweisia crispata (Dicks. Ex With.) Lindb., Acta Soc. Sci. Fenn. 10: 22. 1871; Bryum crispatum Dicks. ex With., Syst. Arr. Brit. Pl. (ed. 4) 3: 816. 1801.


Weissia denticulata Brid., Muscol. Recent. Suppl. 1: 108. 1806, hom. illeg. Weissia fugax Hedw. var. denticulata Hartm., Handb. Skand. Fl. (ed. 3): 273. 1838. Rhabdoweisia denticulata Bruch & Schimp. in B.S.G., Bryol. Eur. 1: 99. 1846, nom. illeg. incl. spec. prior. Weissia fugax var. subdenticulata Boul., Musc. France 543. 1884. Rhabdoweisia fugax (Hedw.) B.S.G. var. subdenticulata (Boul.) Limpr., Laubm. Deutschl. 1: 275. 1886. Rhabdoweisia striata (Schrad.) Lindb. var. subdenticulata (Boul.) I. Hagen, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1914(1): 18. 1915. Rhabdoweisia kuzenevae Broth. in Fedtschenko, Flora Asiae Rossicae. 58–60. 1914.

Plants minute to small, 2–5 mm high, green to bright yellowish green, in tufts. Stems erect, simple or sparsely branched, somewhat radiculose below; central strand present. Leaves 1.8–2.8 mm × 0.25–0.35 mm, strongly crispate when dry, flexuose spreading when moist, narrowly lanceolate to linear-lingulate, leaf base clearly narrower, the upper part rather abruptly narrower from the middle, narrowly acute at the apex; margins plane or slightly recurved in the lower half, entire or serrulate near the apex; costa strong, percurrent; upper cells rounded quadrate to hexagonal, 9–14 µm wide, somewhat thick-walled and slightly mammillose; basal cells rectangular, 26–39 µm × 10–12 µm, lax and hyaline, thin-walled. Perichaetial leaves similar to the upper stem leaves. Setae slender, straight, 2–3 mm long, yellowish; capsules ovoid, 0.5–1.0 mm long, clearly 8-ribbed when dry; annuli none; peristome teeth linear-lanceolate, nearly smooth. Spores 13–18 µm in diameter, brownish, warty.

Type. England.

Chinese specimens examined: JILIN: Changbai Shan (Mt.), C. Gao 7207, 22482 (IFSBH). LIAONING: Heng-ren Co., T. Cao & J.-Y. Feng 314 (IFSBH); Zhuang-he Co., X.-Y. Jia 870039 (IFSBH). YUNNAN: Handel-Mazzetti 1111 (H); Da-li Co., Redfearn et al. 1541c, 1574 (MO); Yang-bi Co., Redfearn et al. 472 (MO).

Habitat: on rocks or soil over rocks; Distribution: China, Indonesia, Japan, Russia, Europe, Greenland, and North America.

Illustrations: C. Gao (ed.) 1994 (Pl. 88, figs. 1–10).


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