5. Cyathophorella spinosa (C. Müll.) Fleisch. 雉尾藓 zhi-wei xian
Musci Buitenzorg 3: 1091. 1908. Cyathophorum spinosum (C. Müll.) Fleisch., Musci Frond. Archip. Ind. Exsic. 5: 249. 1902. Hookeria spinosa C. Müll., Syn. Musc. Frond. 2: 677. 1851. Type. Indonesia: Java.
Plants robust. Secondary stems simple, up to 6 cm long, 12 mm wide with leaves, caudate at apices, usually covered with clusters of yellowish red filamentous gemmae. Lateral leaves plane when moist, broadly ovate, asymmetric, shortly acuminate at apex, ca. 7 mm × 3 mm; leaf margins spinosely serrate at the upper part of leaf, each tooth usually consisting of several cells; amphigastria costa short, single or forked; laminal cells polygonal, thin-walled, leaf marginal cells narrow, forming inconspicuously bordered margin. Perichaetial leaves wider, distinctly spinosely serrate above; costa short, single, unequally forked above.