Squamidium leucotrichum (Taylor) Broth.

  • 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

    Brachytheciaceae

  • Scientific Name

    Squamidium leucotrichum (Taylor) Broth.

  • Description

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    Species Description - Plants pale-green to yellow-brown or black. Secondary stems up to 40 cm long. Stem leaves 1.2-3 x 0.6-1.2 mm long, oblong from a cordate base, abruptly subulate, ending in a crisped hair-point; margins serrulate above; apical cells 10-42 x 1-2.5 µm; median cells, 16-27 x 1-2.5 µm; basal cells 6-14 x 1.5-5.5 µm. Branches tumid, up to 10 cm long. Branch leaves 1.5-3 x 0.5-1 mm; apical cells 7-34 x 1-2.5 µm; median cells 15-30 x 1-1.5 µm; basal cells 5-14 x 1.5-5.5 µm; alar cells thin-walled, bulging, quadrate to rectangular. Capsules immersed; exostome lightly papillose. Calyptrae densely hairy.

  • Discussion

    Figs. 539h, i; 540

    S. leucotrichum (Tayl.) Broth, in E. & P., Nat. Pfl. 1(3): 809. 1906.

    Hypnum leucotrichumTayl., London J. Bot. 7: 196. 1848.

    Neckera rufescens C. Mull., Syn. Muse Frond. 2: 124. 1850.

    N. longe-barbata Hampe, Linnaea 31: 525. 1862.

    Pilotrichella longipila Schimp. ex Besch., Ann. Sci. Nat. Bot. VI, 3: 214. 1876.

    Pilotrichum piliferum Schimp. ex Par., Index Bryol. 906. 1897, nom. nud.

    Pilotrichella leptotricha Jaeg. ex Par., Index Bryol. Suppl. 271. 1900, nom. nud.

    This species is readily separated from S. nigricans by crisped-flexuose hairpoints terminating the leaves.

  • Distribution

    Pendent from the limbs of trees at moderate elevations (1200-1900 m); Chiapas, Oaxaca, Puebla, Veracruz.—Mexico to northern South America; West Indies

    Mexico North America| Central America| Colombia South America| Venezuela South America| Brazil South America| Ecuador South America| Peru South America| West Indies| French Guiana South America| Guyana South America| Suriname South America| Puerto Rico South America| Saint Kitts and Nevis South America| Guadeloupe South America| Dominica South America| Saint Vincent and the Grenadines South America| Grenada South America|