Timmia megapolitana var. bavarica (Hessl.) Brid.

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part One: Sphagnales to Bryales. Mem. New York Bot. Gard. 69 (1): 1-452.

  • Family

    Timmiaceae

  • Scientific Name

    Timmia megapolitana var. bavarica (Hessl.) Brid.

  • Description

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    Species Description - Plants in loose, dark-green tufts about 1.5-3.5 cm high, Leaves 4.5-8 mm long, subtubulose and strongly curled when dry, wide-spreading from a sheathing base and concave when moist, gradually oblong-lanceolate from an oblong base, broadly and bluntly acute; margins coarsely serrate above and serrulate to the shoulders or somewhat lower, incurved when dry, erect when moist; costa subpercurrent, bulging on the upper surface, smooth at back or somewhat mammillose-roughened near the apex; upper cells 6-7 µm wide, angular, hexagonal to somewhat elongate (up to 11 µm long), bulging-mammillose on the upper surface and also on the lower surface near the costa for some distance above the sheathing base; cells ofthe base long-rectangular, smooth, thin-walled. Autoicous (or polygamous). Setae 10-30 mm long; capsules 2-3 mm long, broadly oblong-cylindric, curved-asymmetric, suberect to horizontal; exostome teeth yellow-brown; filaments of endostome yellowish or whitish, 64, evenly spaced, appendiculate. Spores 11-18 µm, smooth or finely papillose. Calyptra clasping the tip of the seta after falling from the urn.

  • Discussion

    Fig. 437

    T. megapolitana Hedw. var. bavarica (Hessl.) Brid., Bryol. Univ. 2: 71. 1827.

    T. bavarica Hessl., De Timmia Comment. 19.1822.

    T. megapolitana ssp. bavarica (Hessl.) Brassard, Lindbergia 10: 34. 1984.

    In contrast to the var. megapolitana, the var. bavarica has upper leaf cells smaller, more angular, and more seriate-arranged and those ofthe sheath not at all papillose. The Mexican plants are structurally autoicous, but the male inflorescences often have archegonia in mixture with the antheridia.

    The section Timmia, to which the Mexican taxon belongs, was treated in detail by Brassard (1984).

  • Distribution

    On shaded banks and in cliff crevices at higher altitudes, ca. 3500 m alt.; Coahuila (Sierra Coahuilon); Mexico (Rio Frio).—Mexico; Greenland to Alaska, south to Ontario and in the Rocky Mountains to Arizona and Colorado; Europe, the Caucasus, central and eastern Asia; reported from North Africa.

    Algeria Africa| Egypt Africa| Libya Africa| Morocco Africa| Tunisia Africa| Kazakhstan Europe| Kyrgyzstan Europe| Tajikistan Europe| Turkmenistan Europe| Uzbekistan Europe| China Asia| Japan Asia| Mongolia Asia| South Korea Asia| North Korea Asia| Taiwan Asia| Azerbaijan Asia| Georgia Asia| Iran Asia| Russia Asia| Turkey Asia| Europe| United States of America North America|