12. Plagiomnium rhynchophorum (Hook.) T. Kop. 具喙匐灯藓 ju hui fu deng xian
Hikobia 6: 57. 1971. Mnium rhynchophorum Hook., Icon. Pl. 1, pl. 20. f. 3. 1836. Type: India. Wallich s.n.
Mnium ligulaceum C. Müll. in Sak., Bot. Mag. (Tokyo) 49: 685. 1935, nom illeg.
Mnium minutidentatum C. Müll., Gen. Musc. Frond. 134. 1900, nom. nud.
Mnium rhynchophorum var. minutum Ren. & Card., Bull. Soc. Roy. Bot. Belgique 34(2): 63. 1896.
Mnium succulentum var. densum Fleisch. in Dix. & Reim., Hedwigia 71: 52. 1931, hom. illeg. Mnium succulentum var. densum Fleisch., Musci Frond. Archipel. Ind. Exs. 467. 1908, nom. nud.
Plants slender, in loose tufts. Primary stems and infertile branches prostrate, curved, sparsely foliate, with dense rhizoids; fertile branches erect, ca. 2–4 cm high, radiculose below, densely foliate above. Leaves oblong-elliptical or ovate-ligulate, 4–7 mm × 2.5–3.0 mm, usually undulate, suddenly narrowed at base, obtuse above; margins bordered by 2–4 rows of elongate cells, dentate above mid-leaf; costae percurrent; leaf cells small, irregularly hexagonal, ca. 25 µm × 10 µm, walls slightly thickened at corners. Synoicous. Setae solitary or clustered, ca. 3 cm long; capsules oblong-cylindrical, horizontal to pendulous.