The fan rootstalk replaced its ancestor, the rootstalk. It roots have gotten much more advanced and the roots with leaf buds on it have matured into larger fan-like leaves.
Their spores which are still spread by the wind and are still kept inside a chamber placed on top of its stalk which is opened once the chamber is filled with spores. Like its ancestor its roots can entangle with other fan rootstalks and make a huge massive web of the plants. This can keep them afloat when the marsh floods. When the flood subside they sink back into the mud.
Living Relatives (click to show/hide)
These are randomly selected, and organized from lowest to highest shared taxon. (This may correspond to similarity more than actual relation)
