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Published In: Hooker's Journal of Botany and Kew Garden Miscellany 9: 324. 1857. (Hooker's J. Bot. Kew Gard. Misc.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

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. 23, figs. 1–8).

Click here for distribution map.

Map: Racomitrium subsecundum (Hook. & Grev. ex Harv.) Mitt. & Wilson (Distribution in China)

Distribution     (Last Modified On 3/16/2009)
Habitat: on rocks, thin soil over rocks, or sandy ground, sometimes on tree trunks; alt. 1600–4600 m.
Distribution: China, Bhutan, Sikkim, Nepal, India, Sri Lanka, Indonesia, Papua New Guinea, Mexico, and Central America.

Notes     (Last Modified On 3/16/2009)
general taxon notes:
Chinese specimens examined: Guizhou: Lei-shan Co., B. C. Tan 91-728 (FH). Shaanxi: Mt. Taibai, Z.-P. Wei 5871 (IFSBH), Giraldi 2061 (H). Sichuan: Dao-cheng Co., S. He 31866 (MO, PE); Hui-li Co., Handel-Mazzetti 967 (BM, H); Lei-bo Co., Z.-T. Guan 8745 (PE); Mi-yi Co., K.-K. Chen 335 (HKAS); Mt. Omei, C. Gao & T. Cao 18829 (IFSBH), Redfearn et al. 34607 (MO); Mu-li, K.-K. Chen 611 (HKAS); Tian-quan Co., Mt. Wolang, Q.-K. Yang 2013 (PE); Xi-chang Co., X.-J. Li 81-3317 (HKAS); Xi-kang Co., Q.-W. Wang 7201 (PE); Yan-yuen Co., Handel-Mazzetti 2664 (BM, H). Taiwan: Ilan Co., C.-C. Chuang 1745 (NY); Nan-tou Co., Shimada s.n. (H); Tai-tung Co., S.-S. Lin s.n. [Bryophytes of Taiwan Exsiccatae ser. 5, no. 143 (H)]. Xizang: Lang Co., Ludlow et al. 42996 (BM); Mo-tuo Co., Y.-G. Su 1806 (HKAS); Ri-ge-ze Co., Ludlow et al. 6394 (BM); Ya-dong Co., M. Zang 327 (HKAS, IFSBH); Yi-gong Co., M. Zang 5286 (HKAS). Yunnan: Da-li Co., Smith 6025 (PE); De-qing Co., M. Zang 8751 (HKAS); Fu-gong Co., D.-C. Zhang 924 (HKAS); Gong-shan Co., M.-Z. Wang 9960 (PE); Li-jiang Co., M. Zang 1593 (HKAS); Qing-tong Co., W.-X. Xu 645 (YUKU); Wei-xi Co., D.-C. Zhang 671 (HKAS); Yang-bi Co., Redfearn et al. 508 (MO, SMS); Zhao-tong City, C.-X. Li 2346 (HKAS); Zhong-ding Co., X.-J. Li 1593 (HKAS).


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20. Racomitrium subsecundum (Hook. & Grev.) Mitt.   偏叶砂藓   pian-ye sha xian
Hooker’s J. Bot. Kew Gard. Misc. 9: 324. 1897. Grimmia subsecunda (Hook. & Grev.) Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 45. 1859. Trichostomum subsecundum Hook. & Grev. in Hook., Icon. Pl. 1: 17, f. 5. 1836. Type. Locality not indicated, H. 2716 (lectotype BM, by Frisvoll 1988, not seen).
Racomitrium javanicum Dozy & Molk. in Zoll., Syst. Verz. 32. 1855.
Racomitrium javanicum var. incanum Broth., Symb. Sin. 4: 466. 1929. Type. China: Sichuan, Ningyuen, Handel-Mazzetti 1446 (lectotype H, designated by Frisvoll 1988; isolectotype BM).
Racomitrium javanicum var. molle Broth. ex Herz., Hedwigia 50: 127. 1910.
Racomitrium javanicum var. muticum Broth. in Herz., Hedwigia 50: 127. 1910, nom. nud.
Plants large to rather robust, up to 7–8 cm long, yellowish green or brownish green above, brownish or dark brown below, in loose tufts. Stems creeping or ascending, usually irregularly, sometimes subpinnately branched; central strand absent. Leaves imbricately appressed when dry, erect-spreading when moist, clearly secund, 2.6–4.0 mm long, ovate-lanceolate to oblong-lanceolate, keeled above, with hyaline hair-points, the hair-points often flexuous, variable in length, dentate or nearly smooth; margins recurved on one side up to 1/2–3/4 the leaf length, nearly plane or slightly recurved on the other side, unistratose in cross section; costa thick at base, slender upward, percurrent or nearly so; upper and median leaf cells rectangular, 10–23 µm × 3–6 µm, sinuosely thick-walled, smooth; basal cells narrowly rectangular or linear, 23–50 µm × 5–7 µm, sinuosely thick-walled, smooth; alar cells differentiated, usually reddish brown, auriculate, consisting of 2–4 rows of enlarged, thin-walled, rectangular or subquadrate cells. Perichaetial leaves similar to upper stem leaves, but without hyaline hair-points. Setae erect, reddish brown, 10–12 mm long, often twisted above; capsules erect, oblong-ovoid to cylindrical, reddish brown, 2.0–2.7 mm long; opercula long-rostrate; annuli well developed, consisting of 2–3 rows of thick-walled cells; peristome teeth linear, reddish brown, divided to the base, densely papillose. Calyptrae cucullate. Spores small, ca. 12 µm in diameter.


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