(b) In palmately compound leaves, such as those of the horse chestnut ( Aesculus hippocastanum), the leaflets branch from the petiole. Compound leaves may be palmate or pinnate. In compound leaves, the lamina is separated into leaflets. (a) The banana plant ( Musa sp.) has simple leaves. In simple leaves, the lamina is continuous. Simple and compound leaves: Leaves may be simple or compound. There are two basic forms of leaves that can be described considering the way the blade (or lamina) is divided.
Plants with alternate and spiral leaf arrangements have only one leaf per node.The arrangement of leaves on a stem is known as phyllotaxy leaves can be classified as either alternate, spiral, opposite, or whorled.