Acroporium longirostre (Brid.) W.R.Buck

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)

  • Family

    Sematophyllaceae

  • Scientific Name

    Acroporium longirostre (Brid.) W.R.Buck

  • Description

    Species Description - Plants slender, in silky, shiny, light-green or golden-yellow mats. Stems reddish, freely and irregularly branched; branches curved-ascending, cuspidate-tipped. Leaves crowded, spreading at 45° or more, wet or dry, ± homomallous, moderately concave or sometimes subtubulose above, 1-1.5 mm long, narrowly lanceolate, long-acuminate; margins erect or ± incurved above, entire or obscurely sermlate toward the apex; upper cells linear-rhomboidal, ± flexuose, thick-walled, smooth; midbasal cells yellow, thick-walled, and porose; alar cells 2-4, abmptly enlarged and oblong-inflated in 1 row, hyaline or yellow. Autoicous. Perichaetia on both stems and branches; perichaetial leaves erect, 1.4 mm long, lance-acuminate, coarsely and irregularly serrate. Setae 5-10 mm long, smooth throughout; capsules inchned to horizontal, 0.4-0.8 mm long; exostome teeth narrowly furrowed; endostome segments perforate and cilia single or paired, short and stout, sometimes mdimentary. Spores 11-16 µm, smooth or finely papillose.

  • Discussion

    Fig. 738d-j

    Acroporium longirostre (Brid.) Buck, Brittonia 35: 311. 1983.

    Leskea longirostris Brid., Bryol. Univ. 2: 311. 1827.

    Sematophyllum sericifolium Mitt., J. Linn. Soc, Bot. 12: 483. 1869.

    Rhaphidostegium sericifolium (Mitt.) Jaeg., Ber. Thatigk. St. Gallischen Naturwiss. Ges. 1876-77: 394. 1878.

    R. chrysocladum Card., Rev. Bryol. 37: 57. 1910.

    Sematophyllum chrysocladum (Card.) Broth, in E. & P., Nat. Pfl. ed. 2,11: 431. 1925.

    The plants are identified by their small size, narrow, spreading, obscurely homomallous stem and branch leaves, serrate perichaetial bracts, and narrowly furrowed peristome teeth.

  • Distribution

    On bark oftrees, logs, and banks at low to moderate altitudes; Campeche, Chiapas, Hidalgo, Nuevo León, Puebla, Quintana Roo, Tamaulipas, Veracruz.—Mexico to northern South America; West Indies.

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