Orthothecium intricatum |
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fine-leaf bristle moss, fine-leaf leskea, intricate orthothecium moss |
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Habit | Plants small, in mats or tufts, green to yellow-green. |
Stems | 4 cm, 0.2–0.3 mm wide, curved-ascending, sometimes creeping, irregularly branched. |
Leaves | erect to erect-spreading, homomallous, narrowly lanceolate, not or faintly striolate, 1–1.8 mm; margins plane to somewhat revolute, entire or somewhat sinuate; apex gradually subulate; ecostate or costa double, very short; basal laminal cells shorter, broader than medial cells, yellow; medial cells elongate, linear, 45–75 × 4–6 µm. Specialized asexual reproduction rare, by propagula in leaf axils, short, filamentous. |
Seta | red-brown. |
Capsule | symmetric, 1.5–2 mm. |
Spores | 10–14 µm. |
Orthothecium intricatum |
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Habitat | Moist shaded calcareous soil, granite, schist, limestone, rock ledges, vertical cliff faces, tundra |
Elevation | moderate elevations (200-1500 m) (moderate elevations (700-4900 ft)) |
Distribution |
AK; BC; NT; NU; QC; YT; Greenland; n Europe; Asia (China, Japan) |
Discussion | Orthothecium intricatum is distinguished by leaves that are homomallous and narrowly lanceolate, with plane to slightly revolute margins. The stems are yellow-brown; the leaves are occasionally twisted-flexuose when dry; and the setae are 1.5–2 cm. Sporophytes are rare, and a station in Ontario is doubtful. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 28, p. 556. |
Parent taxa | Hypnaceae > Orthothecium |
Sibling taxa | |
Synonyms | Leskea intricata |
Name authority | (Hartman) Schimper: in P. Bruch and W. P. Schimper, Bryol. Europ. 5: 108. (1851) |
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