Orthothecium intricatum

(Hartman) Schimper

in P. Bruch and W. P. Schimper, Bryol. Europ. 5: 108. 1851.

Basionym: Leskea intricata Hartman Handb. Skand. Fl. ed. 5, 336. 1849
Treatment appears in FNA Volume 28. Treatment on page 556. Mentioned on page 551, 555.

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.


Habitat: Moist shaded calcareous soil, granite, schist, limestone, rock ledges, vertical cliff faces, tundra
Elevation: moderate elevations (200-1500 m)

Distribution

V28 867-distribution-map.gif

Greenland, B.C., N.W.T., Nunavut, Que., Yukon, Alaska, 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.

Selected References

None.

Lower Taxa

None.
... more about "Orthothecium intricatum"
Paul L. Redfearn Jr. +
(Hartman) Schimper +
Leskea intricata +
Greenland +, B.C. +, N.W.T. +, Nunavut +, Que. +, Yukon +, Alaska +, n Europe +, Asia (China +  and Japan). +
moderate elevations (200-1500 m) +
Moist shaded calcareous soil, granite, schist, limestone, rock ledges, vertical cliff faces, tundra +
in P. Bruch and W. P. Schimper, Bryol. Europ. +
Holmgrenia +
Orthothecium intricatum +
Orthothecium +
species +