3. Lescuraea radicosa (Mitt.) Moenk. 密根多毛藓 mi-gen duo-mao xian
Laubm. Eur. 693. 1927. Pseudoleskea radicosa (Mitt.) Macoun & Lindb., Cat. Canad. Pl., Musci 6: 181. 1892. Hypnum radicosum Mitt., J. Linn. Soc. Bot. 8: 31. 1864. Type. Canada: British Columbia, Drummond 225.
Plants soft, yellowish green to brownish green, slightly shiny, in dense tufts. Primary stems creeping, with abundant fasciculate rhizoids, irregularly branched; branches mostly curved in arch-shape, blunt at tips; paraphyllia short, small. Leaves slightly secund, up to 1.5–1.9mm × 0.5–0.7 mm, gradually tapered from subdecurrent, ovate to elliptic base to an apiculate apex, biplicate at base; margins narrowly recurved, entire or dentate above; costa ending at apex, serrate on back surface; leaf cells usually smooth or faintly projecting at upper ends on back surfaces; median cells hexagonal to long-rhomboidal, 15–20 µm × ca. 5 µm; basal cells rather wide, oblong; alar cells quadrate; branch leaves slightly secund, margins serrate. Dioicous. Setae 5–7 mm long, slightly curved; capsules pendent, long-ellipsoidal; peristome double; exostome teeth lanceolate, densely striate below, verrucose above; endostome segments as long as exostome teeth, somewhat perforate. Spores 14–18 µm in diameter, reddish brown, papillose.