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Published In: Bryologia Europaea 3: 99 (fasc. 25–28. Monogr. 7). 1845. (Bryol. Eur.) Name publication detail

Project Name Data (Last Modified On 3/16/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/16/2009)
General Reference:

Illustration & Map     (Last Modified On 3/16/2009)
Related Objects:
Illustrations: X.-J. Li (ed.) 2000 (Pl. 15, figs. 1–10); T. Cao & Vitt 1986 (Fig. 50).

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Map: Schistidium apocarpum (Hedw.) Bruch & Schimp. (Distribution in China)

Distribution     (Last Modified On 3/16/2009)
Habitat: on calcareous or other basic substrates, also found on acidic rocks.
Distribution: China, Japan, Russia, Europe, Africa, North and South America, Australia, and New Zealand.

Specimens Examined     (Last Modified On 3/16/2009)
Specimens Examined:
Chinese specimens examined: Guizhou: Between Tong-zi Co. and Jiu-ba Co., 28°15′N, 106°45′E, Crosby 16078 (MO); Mo-yang (Madjia) Co., Handel-Mazzetti 2097a (H); Mt. Fanjing, Crosby 15785 (MO). Heilongjiang: Ning-an Co., X.-L. Zhu 258 (MO, PE); Ta-he Co., Xin-ling, C. Gao 9225, 13180 (both in IFSBH). Henan: Song-xian Co., J.-X. Luo 412 (MO, PE); Xi-xia Co., J.-X. Luo 281 (MO, PE). Hubei: Mt. Shennongjia, Y.-B. Zhang 33151 (IFSBH). Nei Mongol: Mt. Helan, Z.-G. Tong 62810 (MO, PE). Sichuan: Nan-ping Co., S. He 30057 (MO); Song-pan Co., Redfearn 35197 (MO); Xiang-cheng Co., S. He 31785 (MO); Yuan-yan (Yenyuen) Co., Handel-Mazzetti 2666 (H). Taiwan: Chia-yi Co., Iwatsuki & Sharp 518 (UBC); Mt. Nanhu Dashan, C.-C.Chuang 1784 (UBC); Nan-tou Co., S.-H. Lin s.n. [Bryophytes of Taiwan Exsiccatae ser. 5, no. 120, (MO)]; Tai-tung Co., M.-J. Lai 9514 (MO). Xinjiang: Zhao-su Co., A.-R. Li 10575 (MO, PE). Xizang: Jia-li Co., K.-Y. Zhao 1367 (IFSBH).

Notes     (Last Modified On 3/16/2009)
general taxon notes:
Schistidium apocarpum is characterized by having plants green to yellowish green in dense tufts, abaxial costal surface smooth, leaf apices with hyaline hair-points, and leaf margins entire. The capsules are oblong to oblong-ovoid, and the spores are 9–11 µm in diameter. Deguchi (1978) considered the elongate-hexagonal exothecial cells to be a distinctive character of S. apocarpum. It seems that the exothecial cells of S. apocarpum are variable from oblate to elongate-hexagonal, even in the same capsule. Bremer (1980b) listed about 140 names as synonyms of S. apocarpum; however, the author only examined about 60% of the type specimens. In our opinion, the concept of S. apocarpum circumscribed by Bremer (1980b) is too broad, and further revisionary study of this species complex is needed.


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1. Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G.   圆蒴连轴藓   yuan-shuo lian-zhou xian
Bryol. Eur. 3: 99. tab. 233. (fasc. 25–28). 1845. Weissia apocapra (Hedw.) Poiret, Encycl. 8: 794. 1808. Grimmia apocarpa Hedw., Sp. Musc. Frond. 76. 1801. Type. “Lipsiae ad piscinam Lindenthalensem, Gothanam versus Deburgum, Dresdae ad rivulum Weiseriz ubertum” (lectotype G, designated by T. Cao & Vitt 1986).

Plants medium-sized, up to 2.0–3.5 cm high, green above, dark green to blackish or dark brown below, in dense tufts. Stems erect, fairly freely branched, with well developed central strand in cross section. Leaves erect, imbricately appressed when dry, spreading when moist, keeled above, 1.5–2.3 mm long, lanceolate from an ovate base, gradually narrowed to a short hyaline hair-point (0.20–0.45 mm long); margins entire, recurved on one or both sides nearly throughout, bistratose above; costa prominent, ending just below the apex, smooth on abaxial surface, consisting of nearly uniform cells in cross section; upper cells irregularly rounded-quadrate, 5–7 µm wide, unistratose or in places bistratose; basal marginal cells quadrate to short-rectangular, 9–14 µm × 7–12 µm, with slightly sinuose walls; basal juxtacostal cells short-rectangular to rectangular, 14–23 µm × 5–7 µm, with nearly straight walls. Autoicous. Perichaetial leaves enlarged, up to 2.8 mm long, broadly ovate, erect. Setae shorter than capsule urns, yellowish green, straight, 0.3–0.4 mm long; capsules immersed, erect, 1.2–1.5 mm long, oblong to oblong-ovoid, wide mouthed, smooth or nearly so; exothecial cells quadrate to oblate, with thin and smooth walls; annuli absent; opercula conic with a short, obtuse beak; columella falling with operculum; peristome teeth reddish brown, lanceolate, perforate above, papillose throughout on outer and inner surfaces. Calyptrae small, cucullate. Spores 7–11 µm in diameter, small, yellowish green, granulose to nearly smooth.



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