Bommeria ehrenbergiana (Klotzsch) E.Fourn.

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Pteridaceae

  • Scientific Name

    Bommeria ehrenbergiana (Klotzsch) E.Fourn.

  • Description

    Species Description - Rhizomes short-creeping, horizontal; rhizome scales linearlanceolate, orange-tan, ca. 5 mm; fronds 12–40 cm, approximate; stipes 1/2–2/3 the frond length, terete at bases to grooved distally, castaneous to atropurpureous, glabrous except for acicular hairs in grooves; blades pedate, deltate, bipinnatifid, 5–16 cm; costae castaneous to atropurpureous; adaxial surfaces with abundant unicellular, acicular hairs 0.3–0.5 mm; abaxial surfaces with rare scales 2–8 cells wide and acicular hairs 0.3–1 mm; veins netted; sori along the distal 1/4–1/2 of veins; spores 64 per sporangium.

  • Discussion

    Gymnogramma ehrenbergiana Klotzsch, Linnaea. 20: 411. 1847. Stenogramma ehrenbergiana (Klotzsch) E. Fourn., Mexic. Pl. 1: 71. 1872. Type. “Ad thermas mexicanas, prope Grande in regno Mexico,” Ehrenberg 662 (B!; isotype UC!).

    Gymnogramma podophylla Hook., Sp. Fil. 5: 152. 1864. Hemionitis podophylla (Hook.) J. Sm., Hist. Fil. 150. 1875. Bommeria podophylla (Hook.) E. Fourn., Bull. Soc. Bot. France 27: 328. 1880. Type. Mexico. Veracruz: Between Vera Cruz and Orizaba, Mu¨ller 719 (K!; isotype BM!, frag. NY!).

    This species resembles B. subpaleacea in having netted veins but is distinct in having only linear abaxial costal scales (vs. conspicuous, abundant, lanceolate to ovate scales) and sori along distal 1/4–1/2 of veins (vs. 1/2–3/4 of veins).

  • Distribution

    Terrestrial and epipetric in periodically moist deciduous woods; 1550–1920 m. Mexico.

    Mexico North America|