Pellaea dura

Description 5

Rhizome shortly creeping to semi-erect, up to 5-7 mm in diameter; rhizome scales reddish brown, subentire, apex slowly tapering to a point, up to 7 mm long, margins serrulate.   Fronds tufted, erect, coriaceous.   Stipe dark brown, up to 25 cm long, subglabrous with few hair-like brown scales near the base. Lamina ovate to lanceolate in outline, up to 24 cm × 10 cm, imparipinnate to 2-pinnate on the base, if bipinnate with 2-5 pairs of lateral pinnules below a slightly larger terminal pinnule. Pinnae narrowly elliptic to lanceolate in outline, up to 5 cm long, apex rounded, cordate to rounded base articulated to a short petiole, glabrous on both surfaces, paler green below, veins hardly visible and anastomosing. Rhachis and secondary rhachises black, shortly pubescent above, glabrous below.  Sori marginal, continuous; indusium entire, membranous, continuous.

Sources and Credits

  1. (c) Mark Hyde, Bart Wursten and Petra Ballings, some rights reserved (CC BY-NC), https://www.zimbabweflora.co.zw/speciesdata/images/10/100940-6.jpg
  2. (c) Mark Hyde, Bart Wursten and Petra Ballings, some rights reserved (CC BY-NC), https://www.zimbabweflora.co.zw/speciesdata/images/10/100940-3.jpg
  3. (c) Mark Hyde, Bart Wursten and Petra Ballings, some rights reserved (CC BY-NC), https://www.zimbabweflora.co.zw/speciesdata/images/10/100940-1.jpg
  4. (c) MBG, some rights reserved (CC BY-NC-SA), http://images.mobot.org/tropicosthumbnails/TropicosImages2/100158000/100158965.jpg
  5. (c) Mark Hyde, Bart Wursten and Petra Ballings, some rights reserved (CC BY-NC), http://eol.org/data_objects/30273876

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