This is a leaf. The leaves of Pterocarya stenoptera are simple leaves with compound veins, that is, each leaf consists of only one petiole and one leaf, but the veins are in a branched network structure. From the leaf morphology, Pterocarya stenoptera is a simple leaf. Maple bamboo is a common plant, also called bamboo or Phyllostachys pubescens. Maple bamboo belongs to Gramineae and is a perennial herb.