Tuerckheimia angustifolia (K.Saito) R.H.Zander

  • 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

    Tuerckheimia angustifolia (K.Saito) R.H.Zander

  • Description

    Species Description - Plants light-green to greenish-brown and often glaucous above, brown below. Stems irregularly branched, up to 1 cm high, slightly radiculose below. Leaves crowded, 2-2.7(-4) mm long, broadly concave, rarely keeled, not broadly grooved, acute or acuminate, mucronate, not decurrent; margins entire or occasionally sinuose, sometimes bistratose in patches; costa short-excurrent as a stout, sharp mucro, with 2 stereid bands; upper cells rounded-quadrate to hexagonal, occasionally triangular to short-rectangular and elongate transversely or longitudinally, mostly 11-14 µm, and 1:1, pellucid, with usually massive, compound papillae centered over the lumen and 1—2(—3) per cell, seldom granular and weakly centered or scattered; basal cells differentiated in a small area, thin-walled, often hyaline, usually smooth, shortrectangular to short-rhomboidal, 12-17 µm and 2-3:1. Perichaetial leaves up to 3 mm long, long-lanceolate, abruptly sheathing at base. Setae about 4 mm long; capsules about 1.5 mm long, long-ellipsoidal, narrow at the mouth; annulus weakly differentiated; operculum straight, long-rostrate, with cells in straight rows, 1.1 mm long. Spores not seen. [Sporophytic details taken from the original description.]

  • Discussion

    Fig. 189

    T. angustifolia (Saito) Zand., Misc. Bryol. Lichenol. 8: 27. 1978.

    GymnostomumangustifoliumSaito, J. Hattori Bot. Lab. 36:163.1972.

    Somewhat fragile leaves m a y have significance in asexual reproduction. The rather large leaf cells with massive, centered papillae distinguish most specimens from Molendoa sendtneriana. Species of Trichostomum have small cells nearly covered by crowded, flattened papillae.

  • Distribution

    On wet, shaded, calcareous boulders or cliffs, often near streams; Jalisco, Nuevo Leon, Tamaulipas.—Mexico; Alaska; southeastern United States; Japan, Korea, and Formosa.

    Mexico North America| United States of America North America| Japan Asia| North Korea Asia| South Korea Asia| Taiwan Asia|