Acroporium longirostre (Brid.) W.R.Buck
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Authority
Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)
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Family
Sematophyllaceae
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Scientific Name
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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.
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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.
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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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