pinnae

tendrils bifurcate.Leaves bipinnate, or pinnate on upper branches, basal pinnae of bipinnate leaves usually 3-foliolate;

卷须二叉二回羽状的，或在枝羽状，基二回羽状通常具3小的；

Characteristics: Terrestrial ferns; stipes tuft, backlish at base; young fronds pinnaye with wider pinnae, when getting older, the fronds become bipinnate or tripinnatifid with slender pinnules.

形态：地，柄丛，基黑色；年轻的子一回羽状复，的子二回或三回羽状复。