Hyophila involuta (Hook.) A.Jaeger

  • 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

    Pottiaceae

  • Scientific Name

    Hyophila involuta (Hook.) A.Jaeger

  • Description

    Species Description - Plants dark-green above, brown or red-brown below, rarely branched. Stems up to 10 mm high; central strand strong, occasionally hollow; hyaloderm not or weakly differentiated. Propagula often present on brown, axillary stalks, stellate to dentate-ellipsoidal, up to 120 (rarely 300) µm long. Leaves tubulose and incurved when dry, spreading when moist, rosulate-tufted, up to 2.5 mm long, spatulate, broadly channeled across the leaf and shallowly grooved at the costa, rounded to rounded-obtuse at the apex, somewhat sheathing at the narrow base and weakly auricled; margins plane to broadly incurved, entire to denticulate or distantly dentate in the upper 1/4; costa subpercurrent to ending in an apiculus, often red-brown, in section semi-circular, with both stereid bands strong, guide cells in 1 layer, hydroids absent, and epidermal cells on the ventral surface quadrate or, more commonly, short-rectangular, weakly convex or rarely bulging as much as the laminal cells, the epidermal cehs of the dorsal surface elongate and smooth; upper cells ± arranged in longitudinal and oblique rows, mammillose-bulging on the upper surface, weakly convex on the lower, 8-10 µm wide, rounded-quadrate to hexagonal, thin- to evenly thick-walled; basal cells differentiated across the leaf or in median regions, rectangular, 13-20 µm wide and 2-4:1, with walls thin or evenly thickened. Dioicous. Setae 6-7 mm long, red-brown to yellow-brown; capsules 2-3 mm long, cyhndric from a poorly differentiated neck, red-brown; exothecial cells rectangular, 20-25 µm wide and 2-5:1, thick-walled; annulus of 2-3 layers of vesiculose cells, deciduous in fragments or remaining attached to the µm or operculum; operculum 0.5-0.6 mm long, with cells straight-rowed. Spores 7-9 µm, weakly papillose.

  • Discussion

    Fig. 200

    H. involuta (Hook.) Jaeg., Ber. Thatigk. St. Gallischen Naturwiss. Ges. 1871-72:354.1873.

    Gymnostomum involutum Hook., Musci Exot. 2: 154. 1819.

    G. tortula Schwaegr., Sp. Muse Suppl. 2(2): 78. 1826.

    Hyophila tortula (Schwaegr.) Hampe, Bot. Zeitung 4: 267.1846.

    Trichostomum bescherellei Schimp. ex Besch., Mem. Soc. Sci. Nat. Cherbourg 16: 177. 1872.

    Hyophila bescherellei (Schimp. ex Besch.) C. Mull., Flora 58: 538. 1875.

    H. elata Card., Rev. Bryol. 36: 75. 1909.

    H. subdenticulata Card., Rev. Bryol. 36: 76. 1909.

    H. dentataCard., Rev. Bryol. 40: 36. 1909.

    The propagula vary in shape and size, and considerable differences are found in dentation of the upper margins of leaves.

  • Distribution

    On moist, calcareous rock or concrete at low to moderate elevations; Campeche, Chiapas, Colima, Durango, Guerrero, Hidalgo, Jalisco, México, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Quer6taro, Quintana Roo, San Luis Potosi, Sinaloa, Tabasco, Tamaulipas, Veracruz, Yucatan.—Mexico; Central America, South America, and the West Indies; widespread in eastern United States; southwestern United States; central Europe; China, Burma, India, Japan, Indonesia, and Oceania

    Mexico North America| Central America| South America| West Indies| United States of America North America| Austria Europe| Croatia Europe| Czech Republic Europe| Germany Europe| Hungary Europe| Liechtenstein Europe| Poland Europe| Slovakia Europe| Slovenia Europe| Switzerland Europe| China Asia| Burma Asia| India Asia| Japan Asia| Indonesia Asia| Oceania|