Juratzkaea seminervis (Kunze ex Schwägr.) Lorentz

  • Authority

    Ireland, Robert R. & Buck, William R. 1994. Stereophyllaceae. Fl. Neotrop. Monogr. 65: 1-49. (Published by NYBG Press)

  • Family


  • Scientific Name

    Juratzkaea seminervis (Kunze ex Schwägr.) Lorentz

  • Type

    Type. Chile, Valparaíso, Poeppig, Collect. PL Exs. 273 (lectotype, BM; isolectotypes, BM, NY).

  • Synonyms

    Leskea seminervis Kunze ex Schwägr., Helicodontium seminerve Schwägr., Stereophyllum seminerve (Kunze ex Schwägr.) Mitt., Fabroniella krausei Lorentz & Müll.Hal., Stereophyllum krausei (Lorentz & Müll.Hal.) Broth., Juratzkaea krausei (Lorentz & Müll.Hal.) M.Fleisch., Juratzkaea seminervis var. arenicola Thér., Juratzkaea seminervis var. pilifera Thér.

  • Description

    Species Description - Plants yellow- to bright-green, in loose, soft, glossy mats. Stems terete-foliate, to 4 cm long, 1-3 mm wide, simple or irregularly and sparingly branched; axillary hairs with a single short brown basal cell and 3 short-rectangular apical cells. Leaves lax, close, erect-spreading, scarcely changed when dry, 1.2-3 mm long, 0.4-1.0 mm wide, lanceolate to ovate-lanceolate, concave, gradually long-acuminate; margins plane, entire, sometimes minutely serrulate above; costa extending 1/2 length of leaf; cells smooth, median cells 118-165 µm long, 5-9 µm wide; alar cells quadrate to oblong, 14-28 µm long, 14-24 µm wide. Autoicous. Setae brown to reddish, 0.6-1.2 cm long; capsules erect, reddish brown, 1-2 mm long, cylindric, usually somewhat contracted below mouth when dry; opercula short-conic, ca. 0.4 mm long. Spores 11-14 µm in diameter.

  • Discussion

    This species is distinguished from J. argentinica by glossy, terete-foliate plants, by lanceolate to ovate-lanceolate, gradually acuminate leaves, mostly less than 1.8 mm long, and by alar cells that are short, 15-27 pm long.

  • Distribution

    Common; restricted to Chile, occurring from Antofagasta, the northern province, to Maule, the central province (Fig. 19). On bases of trees with furrowed bark (e.g., Acacia caven, Cryptocarya alba and Quillaja saponaria) or occasionally on rocks, 20-700 m.

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