1. Daltonia angustifolia Dozy & Molk. 狭叶小黄藓 xia-ye xiao-huang xian Ann. Sci. Nat. Bot., ser. 3, 2: 302. 1844. Type. Indonesia: Java. Daltonia angustifolia Dozy & Molk. var. strictifolia (Mitt.) Fleisch., Musci Buitenzorg 3: 959. 1908. Daltonia strictifolia Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 146. 1859. Plants small, brownish when dry, tuft-forming, often few in a cluster. Stems simple, erect or branched at base, 4–6 mm long, in cross section with an outermost layer of colored, moderately thick- to thin-walled cells enclosing a core of colorless, parenchyma cells, central strand absent. Leaves spirally crowded, flexuous when dry, erect-patent when wet, narrowly lanceolate to oblong-lanceolate, 1.5–2.0 mm × 0.25–0.50 mm, gradually long acuminate, with a well differentiated border of 2–3(–4) rows of linear cells; margins entire, recurved on both sides; costa single, strong, somewhat carinate, ending some distance below the apex; leaf cells smooth, irregular in shape, oblong, fusiform to narrowly rhomboidal, 22–33 µm × 7–10 µm, moderately thick-walled, becoming shorter near apex, longer and laxer at leaf base. Synoicous. Perichaetial leaves smaller, ovate, 0.2 mm long, ecostate. Setae lateral, 3–5 mm, reddish, smooth below, scabrous above; capsules 1.0–1.3 mm long, ovoid, inclined to erect; exostome teeth and endostome segments nearly the same length, ca. 2/3 the length of the theca, papillose. Calyptrae mitrate, fringed with a basal row of long hairs, covering only the long rostrate operculum. Spores 10–11 µm in diameter, papillose.