Examples include certain species of Lycopodium and Selaginella, which have two rows of lateral leaves and one or two rows of smaller abaxial or adaxial leaves. 例如石松属和卷柏属,植物体上具有双行较大的侧生叶,还有1行或2行较小的生于近轴面或远轴面的叶。
adaxial
[ adj ] nearest to or facing toward the axis of an organ or organism <adj.all> the upper side of a leaf is known as the adaxial surface