Marsh fern |
Marsh fern |
Thelypteris palustris |
Marsh Fern Family - Thelypteridaceae |
© Pathology Images Inc. 2002 2002 |
A common, delicate, medium-sized green fern with relatively long, smooth leaf stalks
and lance-shaped leaves with pointed tips and the widest portion near the base.
Leaflets also lance-shaped, paired, horizontally positioned (even basal ones)
and cut nearly to the midvein into 12 or more lobes which are blunt at the
tip and have smooth margins. Fertile leaflets appear narrow as the lobe margins
curl under to partialiy envelope the two rows of sori. (Photographed at Eagle Lake - September 5, 2002) |




