Gymnocarpium robertianum

Limestone Oak-fern
  • Delicate leaves 20 to 30 cm in length, on a creeping rhizome
  • Triangular blade, parallel to the ground
  • Stipe and blade with glandular hairs (lens)
  • No indusia
  • Very similar to G. dryopteris

WOODSIACEAE

= ATHYRIACEAE

genus Gymnocarpium
.

  • Growth in spring, fructification in summer, fronds disappearing in autumn
  • Cool to moist sites, foot of limestone boulders, cliffs, screes, lapiaz crevices;
    up to 2000 m in elevation
  • Common throughout the Vercors: from the "Petits Goulets" (300 m) to the "Hauts Plateaux" (2000 m)