Osmunda claytoniana gallery
The sori of the fern interrupt the leaflets on the sterile frond
Interrupted Fern Gallery
Fiddle-head
The unfurling fiddle-heads have a distinct white wooly covering
Scotia Barrens (Centre Co)
by Maria G. Pavlova on 04/19/2012
Unfurling frond
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/04/2024
Unfurling frond with fertile pinnae
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/04/2024
Sporangia
Sporangia of interrupted fern occur in the mid part of the stem, thus the fern is called interrupted
Whipple Dam (Huntingdon Co)
by paenflowered on 05/06/2017
Flowering fern
Whipple Dam (Huntingdon Co)
by Maria G. Pavlova on 05/06/2017
Sporangia and pinnae
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/21/2023
Ripening sporangia
Black Moshannon (Centre Co)
by Maria G. Pavlova on 05/22/2021
Sporangia
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/27/2023
Sporangia
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/27/2023
Tufts of hairs on underside of pinna base near rachis
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 05/27/2023
Fertile and sterile pinnae
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 06/04/2023
Growing by water
Black Moshannon (Centre Co)
by paenflowered on 06/18/2018
Plant form & habitat
Interrupted fern grows in vase-like clumps
Black Moshannon (Centre Co)
by paenflowered on 06/19/2018
Sporangia and fronds
Bradford Co
by Colin Gillette on 07/02/2023
Veining on underside of pinnae
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/16/2022
Stipe
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/16/2022
Pinnae
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/16/2022
Frond
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/16/2022
Sporangia and pinnae with fall colors
Black Moshannon (Centre Co)
by Colin Gillette on 10/17/2022
Sporangia and pinnae with fall colors
