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Published In: North American Flora 15(1): 64. 1913. (N. Amer. Fl.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/5/2009)
Acceptance : Accepted
Project Data     (Last Modified On 3/6/2009)
General Reference:

Illustration & Map     (Last Modified On 3/6/2009)
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Click here for distribution map.

Illustrations: C. Gao (ed.) 1994 (Pl. 31, figs. 1–10).
Map: Ditrichum heteromallum (Hedw.) E. Britton (Distribution in China)

Distribution     (Last Modified On 3/6/2009)


Habitat: on soil or rocks.
Distribution: China, India, Korea, Japan, Europe, Alaska, and North and South America.

Specimens Examined     (Last Modified On 3/6/2009)
Specimens Examined:


Chinese specimens examined: Guangdong: Chao-yang Co., X.-X. Huang & Z.-X. Li 11 (IBSC); Lian-ping Co., P.-J. Lin 1333 (IBSC). Guangxi: Tian-lin Co., C. Gao 2401 (IFSBH). Guizhou: Gui-yang City, Y. Zhang 599 (IFSBH). Hainan: C. Gao 2775 (IFSBH). Jiangxi: Lu Shan (Mt.), D.-K. Li 17348 (SHM). Sichuan: Ya-an Co., C. Gao et al. 17470 (IFSBH). Xizang: Mo-tuo Co., Y.-G. Su 4754 (KUN); Shejila Shan (Mt.), S.-K. Chen 359 (IFSBH). Yunnan: Gong-shan Co., M.-Z. Wang 9361 (IFSBH, PE), D.-C. Zhang 1066 (KUN).


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6. Ditrichum heteromallum (Hedw.) Britt.   牛毛藓 niu-mao xian
N. Amer. Fl. 15: 64. 1913. Weissia heteromalla Hedw., Sp. Musc. Frond. 71. 1801. Syntypes. Austria and Switzerland.
Ditrichum homomallum (Hedw.) Hampe, Flora 50: 182. 1867. Didymodon homomallus Hedw., Sp. Musc. Frond. 105. 1801.
Ditrichum subtortile Card., Bull. Herb. Boiss., sér. 2, 7: 716. 1907.

Plants small, up to 1.0 cm high, yellowish green, in loose tufts. Stems erect, simple. Leaves slightly homomallous, appressed when dry, erect-patent when moist, lanceolate, 2.0–3.5 mm long, abruptly narrowed from an ovate base to a long, setaceous acumen; margins plane and entire; costa stout, percurrent to short-excurrent, filling almost the entire subula; cells elongate throughout, rectangular to linear, 20–40 µm × 3–5 µm, rather thin-walled. Dioicous. Perichaetial leaves larger than the upper stem leaves, sheathing at base. Setae straight, 1.5–2.0 cm long, reddish brown; capsules erect, cylindric, nearly symmetric, ca. 2 mm × 0.3–0.4 mm, reddish brown, slightly contracted below the mouth; opercula short conic-rostrate; annuli in 2 rows of large, thick-walled cells; peristome teeth linear, 250–300 µm long, divided nearly to the base, whitish yellow, irregularly papillose. Spores 10–12 µm in diameter, yellow, nearly smooth.



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