Some
pinnules have smooth edges and some have serrated edges. The midrib is distinct and the lateral veins are
dichotomous (two branches) to the end. This fern had
rizoma. used to refer to
Paleozoic and
Mesozoic fern leaves that have "fern fronds with pinnules that are attached to the rachis, and have a median vein that runs to the apex of the pinnule, and veins from that are curved and dichotomise". == Species ==