RF2K6NWGM–Silverback Fern Leaves of the Genus Pityrogramma
RMEBN1MK–Dixie silverback fern (Pityrogramma calomelanos), detail of a frond
RMKJ2AWE–Pityrogramma austroamericana
RMP9H6K8–Silverback fern, Pityrogramma schizophylla (Gymnogramma schizophyllum var. gloriosa). Chromolithograph by P. de Pannemaeker from Jean Linden's l'Illustration Horticole, Brussels, 1884.
RMJT3HF8–Silverback fern, Pityrogramma schizophylla (Gymnogramma schizophyllum var. gloriosa). Chromolithograph by P. de Pannemaeker from Jean Linden's l'Illustration Horticole, Brussels, 1884.
RM2BTW75A–Pityrogramma ambigua Domin.
RF2K6NWGF–Silverback Fern Leaves of the Genus Pityrogramma
RM2BTW756–Pityrogramma ornithopteris f elatior Domin.