bipinnate

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

卷须二叉二回羽的，或在上部分枝羽，基部二回羽常具3小的；

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：地生，柄丛生，基部黑色；较年轻的一回羽复，较老的二回或三回羽复。