Other common names:
Limestone Oak Fern, Scented Oak Fern Other scientific names: Carpogymnia robertiana, Dryopteris robertiana, Polypodium robertianum French names:
Gymnocarpe de Robert Family: Wood Fern Family (Dryopteridaceae) Distinctive features:
Single stalk. Three-part frond. Delicate aspect. Thrice divided. Similar species: • Oak Fern (Gymnocarpium dryopteris) - in woods, more common. • Bracken (Pteridium aquilinum) - much larger, very common. • Rattlesnake Fern (Botrychium virginianum) - stouter; single fertile frond rising straight up; common. • Grape Ferns - stouter; stout separate fertile frond Fronds: Thrice divided Native/Non-native:
Native Status:
Rare
Photographs:
125 photographs available, of which 6 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.
A clump of Robert's Fern growing in a dolostone crevice.
Closer view.
Photo of a full frond.
Closeup of the frond.
Underside of the leaflet, showing the sori.Note how the sori are arranged along the edges of the subleaflets.
Closer view of the sori
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