Difference between revisions of "Tortula laureri"
Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 243. 1864,.
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|name=Trichostomum laureri | |name=Trichostomum laureri | ||
|authority=Schultz | |authority=Schultz | ||
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|publication_title=Flora | |publication_title=Flora | ||
|publication_place=10: 163. 1827 | |publication_place=10: 163. 1827 | ||
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|name=Desmatodon laureri | |name=Desmatodon laureri | ||
|authority=(Schultz) Bruch & Schimper | |authority=(Schultz) Bruch & Schimper | ||
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}} | }} | ||
|hierarchy=Pottiaceae;Pottiaceae subfam. Pottioideae;Tortula;Tortula laureri | |hierarchy=Pottiaceae;Pottiaceae subfam. Pottioideae;Tortula;Tortula laureri | ||
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name=Tortula laureri | name=Tortula laureri | ||
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|authority=(Schultz) Lindberg | |authority=(Schultz) Lindberg | ||
|rank=species | |rank=species | ||
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|subfamily=Pottiaceae subfam. Pottioideae | |subfamily=Pottiaceae subfam. Pottioideae | ||
|genus=Tortula | |genus=Tortula | ||
Latest revision as of 21:29, 5 November 2020
Leaves elliptic, apex broadly acute to rounded-acute, mucronate or apiculate, occasionally obtuse, margins recurved at mid leaf, bordered throughout or in lower 2/3 with 2(–3) rows of narrower, short- to long-rectangular, thicker-walled, somewhat less papillose cells that are 1–2-stratose; costa percurrent or short-excurrent, lacking an adaxial pad of cells, distally narrow, 3–4 cells across the convex adaxial surface; distal laminal cells hexagonal to rectangular, 16–21 µm wide, 1–2:1, strongly 2-fid papillose. Sexual condition autoicous. Sporophytes exerted. Seta 0.9–1.5 cm. Capsule stegocarpic, not systylius, cylindric, horizontal or pendent, nearly straight, urn 1.8–2.5 mm; peristome 300–500 µm, teeth 16, weakly twisted to twisted 1 turn, divided nearly to the base into 2–3 branches and variously perforate, basal membrane low, ca. 50 µm; operculum 0.5–1.2 mm. Spores 18–23(–35) µm, spheric, densely papillose.
Phenology: Capsules mature summer.
Habitat: Soil, rock crevices, especially calcareous substrates, tundra, essentially subalpine
Elevation: high elevations (2800-3800 m)
Distribution
Greenland, Alta., B.C., Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Alaska, Colo., Mont., Utah, Europe, Asia, s Africa.
Discussion
Selected References
None.