pinnae

1.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叶，或在部分枝羽状，基部二回羽状叶通常具3小叶的；

2.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，叶柄丛，基部黑色；较年轻的叶子一回羽状复叶，较老的叶子二回或三回羽状复叶。