6. Polytrichum swartzii Hartm. 微齿金发藓 wei chi jin fa xian
Handb. Skand. Fl. (ed. 5) 361. 1849. Polytrichum commune Hedw. var. swartzii (Hartm.) Nyholm, Ill. Moss Fl. Fennoscandia II. 681. 1969. Polytrichum commune Hedw. subsp. swartzii (Hartm.) Hartm., Handb. Skand. Fl. (ed. 9), 2: 43. 1864. Type: Europe.
Polytrichum sinense Card. & Thér., Bull. Acad. Int. Géogr. Bot. 13: 82. f. 3. 1904. Type: China. Guizhou, Gui-yang City, 9 June 1898, Bodinier s.n.
Plants medium-sized, 2–9 cm long, rigid, green, dark green or reddish brown, usually in tufts, occasionally scattered. Stems simple, rarely branched, with numerous rhizoids at base. Leaves densely crowded on upper stems, mostly patent when dry, 3–8 mm long, lanceolate above, sheathing at base; leaf margins entire or serrulate, conspicuously revolute; median and upper leaf cells ovate or nearly quadrate, 9–16 µm wide, usually thick-walled; cells at sheathing base narrowly rectangular, 75–110 µm × 3–12 µm; costa rigid, occasionally excurrent; ventral lamellae in 26–38 rows, 5–10 cells high, marginal cells of lamellae excavate, slightly wider than the lower ones. Dioicous. Perigonia in rosettes, often with innovations in the center. Setae 2.5–5.0 cm long, rigid, reddish brown; capsules 2.5–3.0 mm long, obtusely 4-keeled, apophyses distinct, with stomata at base of urns; exothecial walls projecting; opercula shortly beaked; annuli differentiated; peristome teeth 64, 160–210 µm long, membrane thin. Calyptrae cucullate, covered with dense cilia. Spores spherical, 12–15 µm in diameter, verrucose.