2. Bartramia ithyphylla Brid. 直叶珠藓 zhi ye zhu xian
Muscol. Recent. 2(3): 132. 1803. Plagiopus ithyphyllus (Brid.) Mach., Cat. Descr. Briol. Portug. 76. 1919. Type: Switzerland.
Bartramia deciduaefolia Broth. & A. Yas., Bot. Mag. (Tokyo) 29: 23. 1915.
Bartramia morrisonensis Nog., J. Jap. Bot. 10: 402. 1938, nom. illeg.
Bartramia pomiformis Web. & Mohr, Bot. Taschenbuch 270. 1807, hom. illeg.
Plants medium-sized, yellowish green or brownish green, in dense tufts. Stems reddish brown, erect, up to 3.5 cm high, rarely branched by innovations, with reddish rhizoids below; angled in cross section. Leaves dense, nearly erect, ca. 3–5 mm long, moderately sheathing and hyaline at base, slenderly lanceolate toward apex; margins plane or slightly recurved, sharply serrate above; costae percurrent to shortly excurrent; upper leaf cells narrowly rectangular, papillose, bi- to tri-stratose at margins; basal cells rectangular, smooth, hyaline. Synoicous. Setae 8–15 mm long; capsules spherical, curved, inclined, brownish, glossy, deeply longitudinally furrowed when dry; opercula small, conic; peristome double; exostome teeth lanceolate, endostome segments clearly shorter than the exostome teeth, dark green; basal membrane low. Spores 25–35 µm in diameter, brownish, coarsely papillose.