5. Pogonatum dentatum(Brid.) Brid. 细疣小金发藓 xi you xiao jin fa xian
Bryol. Univ. 2: 122. 1827. Pogonatum capillare var. dentatum (Brid.) G. Roth, Eur. Laubm. 2: 259. 1904. Polytrichum dentatum Menz. ex Brid., J. Bot. (Schrader) 1800(1): 287. 1801. Type: Western North America, Menzies s.n.
Pogonatum capillare (Michx.) Brid., Bryol. Univ. 2: 127. 1827. Polytrichum capillare Michx., Fl. Bor. Amer. 2: 234. 1803.
Pogonatum rubellum Horik. & Saito in Saito, J. Jap. Bot. 31: 71. f. l. 1956.
Plants medium-sized, grayish green, gregarious. Stems 1.5–2.0 cm high, erect, sometimes 2–3 branched above, reddish rhizoids at the base of stem. Leaves crowded above, crisped when dry, erect patent when moist, suddenly constricted from rounded oval sheathing base to a lanceolate limb, ca. 4 mm × 0.6 mm above, sharp or suddenly narrowed to shortly acute apices; leaf margins incurved, bistratose, grossly and loosely toothed; costae broad, with a few small spines on dorsal surface; leaf lamellae in ca. 30 ranks, 3–6 cells high; apical cells of lamellae nearly quadrate or rectangular, the length shorter than the width, strongly thick-walled, densely papillose above. Setae single, 1.0–1.5 cm long, ca. 0.15 mm in diameter, yellow; capsules ovoid to shortly cylindrical, 2.0–2.5 mm × 0.8–12 mm; exothecial cell walls mammillose; peristome teeth lingulate, ca. 0.25 mm long, hyaline above, reddish brown in the middle and base. Spores 12–20 µm in diameter.