Grammitis delitescens (Maxon) Proctor

  • Authority

    Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.

  • Family

    Polypodiaceae

  • Scientific Name

    Grammitis delitescens (Maxon) Proctor

  • Description

    Species Description - Rhizome ascending; rhizome scales brown-black, clathrate, ovate-lanceolate, 1.5-2 mm long; fronds clumped; stipe 2-5 mm long, castaneous to black, pilose with straight pale brownish hairs, 0.3 mm long; blade linear, 4-8 cm gradually tapering at both ends, partially dimorphic; rachis with sparse to scattered 0.3 mm long hairs (unevenly bifurcating); basal portion of blade pin-natisect; pinnae slightly ascending, (1-)1.5-2.5 mm long, 1 mm wide, oblong to deltate, obtuse, costae obscure, not evident, terminal portion of blade pinnatifid, cut ca. 2/3 way to the rachis, 3.54 mm between opposing lobes, 1-1.5 mm wide between opposing sinuses, sinuses 1.3-1.5 mm deep, costae often barely evident; hydathodes present; sori oblong, one per lobe, basal, on terminal pinnatifid portion of blade and onto pin-natisect portion, past base of sinus on vein, glabrous; sporangia glabrous.

  • Discussion

    Grammitis myosuroides Schkuhr, Deutschl. krypt. Gew. 1: 9, t. 7. 1804, nom. illeg., non Swartz, 1801. Polypodium delitescens Maxon, Bull. Torr. Bot. Club 32: 74. 1905. Xiphopteris delitescens (Maxon) Copeland, Amer. Fern J. 42: 51. 1952. Type. Schkuhr describes and illustrates a plant probably received from Swartz and is likely from Jamaica (HAL?). See discussion under Grammitis prionodes for comparison with that species and G. limula.

  • Distribution

    Epiphytic in wet montane forests; Choapan, Tehuantepec; 1200-1350 m. Mexico (Oax), Jam.

    Mexico North America| Jamaica South America|