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Published In: Musci Scandinavici 26. 1879. (Musci Scand.) Name publication detail

Project Name Data (Last Modified On 3/24/2011)
Acceptance : Accepted
Project data     (Last Modified On 3/24/2011)
Discussion: Anisothecium rufescens has triangular-lanceolate leaves gradually narrowed to an acute apex, a percurrent costa, and long-rectangular, thin-walled cells that are inflated and bulging at the margin. Its lowermost leaves are commonly reduced, and the perichaetial leaves are broadly ovate, frequently sheathing at the base of the setae. Anisothecium varium, with similar shaped leaves, has entire, narrowly, recurved leaf margins with firm-walled, non-bulging marginal leaf cells and evenly papillose peristome teeth. Dicranella harrisii, another species with bulging to inflated marginal leaf cells, has ovate-lanceolate leaves.
Illustrations: Husnot (1884, Pl. 7); Grout (1904, Pl. 12); Jennings (1951, Pl. 60); Nyholm (1954, Fig. 15 G); Smith (1978, Fig. 61 1–4); Crum and Anderson (1981, Fig. 71 G–K); Ireland (1982, Pl. 74); Nyholm (1986, Fig. 18 G); Frahm and Frey (1987a, Fig. 50 19).
Habitat: On soil of wet cliff and corticolous; 2000–2450 m.
Distribution in Central America: >GUATEMALA. Quezaltenango: Standley 83388 (F). HONDURAS. Olancho: Allen 12918 (MO, TEFH). COSTA RICA. Cartago: Gómez 2112 (F, MO).
World Range: Northwestern and Eastern U.S.A.; Central America; Northern, Middle, and Eastern Europe; Caucasus, Siberia, Soviet Far East; Japan.


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Anisothecium rufescens (With.) Lindb., Musci Scand. 26. 1879. Bryum rufescens With., Syst. Arr. Brit. Pl., ed. 4, 3: 801. 1801. Dicranum rufescens (With) Turn., Musc. Hibern. 66. 1804. Dicranella rufescens (With.) Schimp., Coroll. Bryol. Eur. 13. 1855. Type. Scotland, Dickson.

Plants reddish brown; stems 5–10(–15) mm high. Leaves 1–2 mm long, lower leaves distant and spreading, upper leaves erect-spreading to subsecund, lanceolate-triangular, gradually narrowed to a broadly acute apex, somewhat keeled above; margins plane, slightly serrulate to sinuate-dentate above the leaf shoulders, serrulate at apex; costa broad, subpercurrent to shortly excurrent; leaf cells long rectangular, thin-walled, 6–10 µm × 40–60 µm long, marginal leaf cells somewhat inflated and bulging. Setae 5–7 mm long, red-brown, smooth; capsules 0.75 mm long, ovoid, reddish brown, erect, symmetrical, smooth; opercula 0.5–0.6 mm long, conic at base, short-rostrate; peristome teeth 300–350 µm high, red, striate-papillose, divided 1/2 their lengths, basal membrane 50 µm high, smooth, darker red, with thicker trabeculae. Spores 16–25 µm, lightly papillose, yellowish.


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