oak ferns
Gymnocarpium
Gymnocarpium is a small genus of ferns, called oak ferns. It was once placed with various other groups, including the dryopteroid ferns and the athyrioid ferns. Cladistic analysis has demonstrated that Gymnocarpium and Cystopteris form a natural but relatively primitive clade that is basal to the asplenioid, thelypterioid, and athyrioid ferns comprehensively.
Gymnocarpium sori are small, round and naked. These ferns generally have a slender, creeping rhizome under the surface of the ground, and fairly thin-textured fronds.
14 branches of this genus, most-observed first
northern oak fern
speciesGymnocarpium dryopteris
Pacific oak fern
speciesGymnocarpium disjunctum
limestone oak fern
speciesGymnocarpium robertianum
Asian oak fern
speciesGymnocarpium jessoense
Nahanni oak fern
speciesGymnocarpium continentale
Gymnocarpium remotipinnatum
speciesGymnocarpium remotipinnatum
Appalachian oak fern
speciesGymnocarpium appalachianum
Gymnocarpium oyamense
speciesGymnocarpium oyamense
intermediate oak fern
hybridGymnocarpium × intermedium
Britton's oak fern
hybridGymnocarpium × brittonianum
tetraploid hybrid oak fern
hybridGymnocarpium × achriosporum
Gymnocarpium × heterosporum
hybridGymnocarpium × heterosporum
Gymnocarpium fedtschenkoanum
speciesGymnocarpium fedtschenkoanum
Gymnocarpium × bipinnatifidum
hybridGymnocarpium × bipinnatifidum
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
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Every page naming Gymnocarpium in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 63054.