Pityrogramma dealbata (C.Presl) Domin

  • Authority

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

  • Family

    Pteridaceae

  • Scientific Name

    Pityrogramma dealbata (C.Presl) Domin

  • Description

    Species Description - Rhizomes erect; rhizome scales 2–3 x 0.1–0.3 mm, concolorous, light brown, entire, prolonged into long, hair-like, uniseriate, often divided tips; fronds less than 40 x 12 cm, clumped; stipes 1/3–1/2 the frond length, dark reddish brown, glabrous except for rare golden brown scales at extreme bases; blades lanceolate, bipinnate-pinnatifid to tripinnate, pinnae equilateral; ultimate segments ascending, cuneate, ovate, coriaceous, glabrous, white-farinose abaxially, rarely yellow, margins toothed, slightly recurved; veins free, depressed adaxially; sori elongate along the veins, appearing as black specks scattered in white farina; spores reddish brown.

  • Discussion

    Gymnogramma dealbata C. Presl, Reliq. Haenk. 1(1): 18, t. 3, f. 1. 1825. Lectotype (chosen by R. M. Tryon, 1962: 67). Panama, Haenke s.n. (PR-sheet 24358a, photo GH). Ceropteris schaffneri Fe´e, Me´m. Foug. 8: 80. 1857. Pityrogramma schaffneri (Fe´e) Weath., Contr. Gray Herb. 114: 25. 1936. Syntypes. Mexico. Veracruz: “pre`s d’Orizaba, dans les lieux secs et expose´s au soleil,” Schaffner 165a, 165b (P, not found).

    Pityrogramma dealbata resembles P. calomelanos in having bipinnate-pinnatifid to tripinnate blades and occurring at low elevations, but is distinct in its cuneate, ovate segments, smaller fronds, and smaller rhizome scales.

  • Distribution

    Roadside banks and wooded slopes of the Pacific slope, pine-oak forests, riparian situations with seasonal evergreen forests; 100–1300 m. Mexico; Guat, Hond, Salv, Nic, CR, Pan.

    Mexico North America| Panama Central America| Costa Rica South America| Nicaragua Central America| El Salvador Central America| Honduras Central America| Guatemala Central America|