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Published In: Journal of the Hattori Botanical Laboratory 81: 37. 1997. (J. Hattori Bot. Lab.) Name publication detail

Project Name Data (Last Modified On 4/3/2009)
Acceptance : Accepted
Project Data     (Last Modified On 5/6/2009)
General Reference:

Illustration & Map     (Last Modified On 5/6/2009)
Illustrations: Taxiphyllum arcuatum (Bosch & Sande Lac.) S. He (Figs. 1–17.)
Map: Taxiphyllum arcuatum (Bosch & Sande Lac.) S. He (Distribution in China)

Distribution     (Last Modified On 5/6/2009)
Habitat: on soil or tree trunks in forests; alt. 1500 m.
Distribution: China, Japan, Indonesia, and Thailand.

Specimens Examined     (Last Modified On 5/6/2009)
Specimens Examined:
Chinese specimens examined: Fujian: Nan-jing Co., G.-C. Zhang & J.-Y. Feng 259, 537 (both in IFSBH). Hainan: Chang-jiang Co., Reese 17556 (MO). Hunan: Chang-sha City, C. Gao 187 (IFSBH); Prope Urbem, Handel-Mazzetti 2293 (H, S). Jiangxi: Mt. Sanqing, E.-Z. Bai 37373 (IFSBH). Sichuan: Mt. Omei, M.-X. Zhang 2162 (XBGH). Xizang: Mo-tuo Co., Y.-G. Su 2956 (HKAS, MO).

Notes     (Last Modified On 5/6/2009)
general taxon notes:
Due to its flattened plant habit, this species resembles some species in the Neckeraceae, e.g., those of Homalia, but it differs in its typical hypnoid peristome teeth and linear leaf cells.


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3. Taxiphyllum arcuatum (Bosch & Sande Lac.) S. He   钝头鳞叶藓 dun tou lin ye xian
J. Hattori Bot. Lab. 81: 37. 1997. Homalia arcuata Bosch & Sande Lac., Bryol. Jav. 2: 56. Pl. 176: B. 1862. Type: Indonesia. Moluccarum insula Halmaheira, Vriese s.n. (lectotype L); Sumatra Padang, Wilterns s.n. (syntype L).
Isopterygium subarcuatum (Broth.) Nog., J. Jap. Bot. 20: 148. 1944. Taxiphyllum subarcuatum (Broth.) Iwats., J. Hattori Bot. Lab. 26: 67. 1963. Homalia subarcuata Broth., Hedwigia 38: 229. 1899. Type: Japan. Kiushiu Nagasaki an Baumrinde, Wichura 1483a (holotype H).
Plants small, complanate, to 3 cm long; leafy stems 1–2 mm wide, glossy, yellowish green or pale yellow. Primary stems prostrate; secondary stems in soft, flattened mats, irregularly or subpinnately branched, branches short and patent, bifarious and complanate; pseudoparaphyllia filamentous, of 1–2(–3) rows of cells at base; rhizoids smooth, brownish; central strand absent, epidermis and cortex undifferentiated, outer cortex with 3–4 layers of small, thick-walled cells, inner cortex of larger, slightly thick-walled cells. Stem leaves and branch leaves similar, 0.65–1.15 mm × 0.30–0.50 mm, oblong-ligulate, often arcuate above, obtuse to rounded or obtusely pointed at apex; leaf margins faintly serrulate to crenulate above, entire or subentire below, often inflexed on one side at base; costae short, double or obsolete; leaf cells thin to moderately thick-walled, often prorate, apical leaf cells oblong-rhombic to rhomboidal, 12–17 µm × 5–7 µm, median leaf cells linear, 55–100 µm × 4.5–5.5 µm, basal juxtacostal cells oblong-linear, 25–45 µm × 5–7 µm, 1–2 rows of quadrate to oblong-quadrate cells at leaf base, alar cells not or slightly differentiated. Autoicous. Perigonia and perichaetia on secondary stems and branches, perigonial leaves smaller, ovate at base, abruptly narrowed to a short acumen; perichaetial leaves ovate and somewhat sheathing at base, gradually narrowed to a lanceolate acumen. Setae elongate, 8–10 mm long, yellowish; capsules oblong-ovoid to cylindrical, 1.0–1.3 mm × 0.6–0.7 mm in diameter, slightly asymmetric, suberect, sometimes horizontal or inclined; annuli well developed, with a layer of larger, fragmenting cells; opercula short rostrate from a conic base, 0.6–0.7 mm long; stomata superficial, at the neck of urns; peristome double, exostome teeth 16, lanceolate, 0.35–0.40 mm long, dorsal plates densely cross-striolate below, papillose above, distinctly wider than ventral plates throughout, the ventral plates smooth; endostome segments 16, lanceo-subulate, 0.30–0.35 mm long, keeled, perforate, clearly papillose; basal membrane 0.10–0.13 mm high, papillose; cilia 1–3, papillose, nodulose-appendiculate. Calyptrae cucullate. Spores 10–14 µm in diameter, faintly papillose.


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