Thelypteris palustris gallery
Marsh Fern Gallery
Young fronds
Myles Standish Forest, MA
by Maria G. Pavlova on 06/14/2015
Dichotomous venation
Nescopeck State Park (Luzerne Co)
by George Chamuris on 06/24/2023
Plant form
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/22/2026
Underside of sterile frond with forked veins
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/22/2026
Top side of developing fertile frond
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/22/2026
Underside of developing fertile frond with sori
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/22/2026
Plant form
Mount Pisgah State Park (Bradford Co)
by Colin Gillette on 07/27/2026
Undersurface of frond
Showing sori and revolute margins
Weiser State Forest (Columbia Co)
by George Chamuris on 09/05/2020
Mature fronds with sori
Weiser State Forest (Columbia Co)
by George Chamuris on 09/04/2020
Lower pinnae
Greenwood Furnace (Huntingdon Co)
by Maria G. Pavlova on 09/10/2023
Adult frond
Greenwood Furnace (Huntingdon Co)
by Maria G. Pavlova on 09/10/2023
Withering frond
