3. Bartramia leptodonta Wils. 单齿珠藓 dan chi zhu xian
Hooker's J. Bot. Kew Gard. Misc. 9: 369. 1857. Type: India.
Bartramia rogersi C. Müll. in Kab., Hedwigia 77: 88. 1937, nom. illeg.
Bartramia schmidiana C. Müll., Bot. Zeitung (Berlin) 16: 162. 1858.
Plants medium-sized, jade green, yellowish green, slightly glossy, in dense tufts. Stems usually simple, erect, ca. 2.0 cm high, rarely branched. Leaves slightly crisped when dry, narrowly lanceolate, sheathing at base, linear-lanceolate toward apex; margins entire below, sharply serrate toward apex; costae strong, ending below the apex, nearly reddish, obscure; upper and median leaf cells rectangular to rhomboidal, multi-stratose and obscure, papillose; cells in sheathing base elongate, hyaline, smooth. Synoicous. Setae ca. 15 mm long, reddish; capsules erect, obliquely ovoid, asymmetric; exostome teeth long-lanceolate; endostome segments absent. Spores not seen.