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 (Botrypus virginianus) - stouter; single fertile frond rising straight up; common. • Grape Ferns - stouter; stout separate fertile frond. Leaves: Thrice divided Habitat: Fields and Open Areas Native/Non-native:
Native Status:
Rare.
For more information visit: Ontario Ferns Photographs:
195 photographs available, of which 6 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.
Range Map is at the bottom of the page
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.
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)
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