3. Trichosteleum saproxylophilum (C. Müll.) B. C. Tan, Schofield & Ramsay 小蒴刺疣藓 xiao shuo ci you xian
Nova Hedwigia 67: 220. 1998. Sematophyllum saproxylophilum (C. Müll.) Fleisch., Musci Buitenzorg 4: 1266. 1923. Hypnum saproxylophilum C. Müll., Syn. Musc. Frond. 2: 334. 1851. Type: Indonesia. Java, Zollinger 243.
Clastobryophilum serrulatum Broth., Mitt. Inst. Allg. Bot. Hamburg 7(2): 129. 1928.
Sematophyllum decipiens Dix., J. Bot. 57: 77. 1919.
Plants small, pale green, glossy, in dense caespitous mats. Stems prostrate, ca. 15 mm long, irregularly branched. Leaves somewhat complanate, erect-spreading, ca. 2 mm long, less than 0.5 mm wide, narrowly oblong-lanceolate, acuminate at apex; margins plane, weakly serrulate; leaf cells linear, (60–)65–95 mm × 2.5–3.0 mm, thin- to moderately thick-walled, usually smooth, occasionally pitted, low papillose. Inner perichaetial leaves larger than the vegetative leaves, abruptly constricted into a long acuminate apex, irregularly serrulate; cells linear. Setae smooth, up to 10 mm long; capsules small, inclined.