6. Fabronia papillidensC. Gao 疣齿碎米藓 you-chi sui-mi xian
Acta Bot. Yunnan. 3(4): 397. 1981. Type. China: Xizang, Cha-yu Co., M. Zang 1195 (holotype IFSBH; isotype HKAS).
Plants slender, brownish green, weakly glossy, in delicate cushions. Stems creeping, irregularly branched; branches erect; rhizoids in tufts. Leaves appressed when dry, erect-spreading when moist, lanceolate, single-cell ciliate at apex; leaf margins plane, serrate with single-celled cilia above; costa slender, ending in the middle of leaf, with single-celled spines on the back; leaf cells narrowly rhomboidal, 55–65 µm × 7–10 µm, thin-walled; alar cells quadrate or rectangular, 10–20 µm × 9–10 µm. Perichaetial leaves widely lanceolate, with sharp teeth at apex. Setae up to 4 mm long, yellowish brown; capsules shortly cylindrical; exothecial cells oblong-hexagonal; annuli undifferentiated; peristome teeth lingulate, short, papillose. Spores not seen.