1. Ephemerum apiculatum P.-C. Chen 尖顶夭命藓 jian-ding yao-ming xian
Contr. Inst. Biol. Natl. Centr. Univ. 1: 4. 1943. Type. China: Chongqing, suburban, on soil, P.-C. Chen 5148, 5171 (syntypes PE, HKAS).
Plants very tiny, only ca. 2.5–3.0 mm high. Stems thin and short, ca. 1 mm long. Basal leaves small, ovate-lanceolate, ca. 1.1 mm × 0.3 mm; upper leaves narrowly lanceolate, ca. 2.3 mm × 0.4 mm; costa slender, percurrent; upper leaf cells irregularly rhomboidal, 40–70 µm × 10–14 µm, projecting at upper ends; marginal cells bistratose; basal cells larger, rectangular, 50–82 µm × 12–20 µm, thin-walled. Dioicous. Setae very short, ca. 0.3 mm long; capsules globose, apiculate; opercula lacking. Calyptrae mitrate. Spores large, spherical, 25–32 µm in diameter, coarsely papillose.