Morphology of leaf pdf file

Leaves are among the most important organs of a plant, and they are indicators of the condition of a tree. Leaves may be simple a single leaf blade or lamina or compound with several leaflets. Introduction to grass morphology university of idaho. A leaf may sometimes have several dominant veins branching out from the petiole. Their morphology and anatomy shows adaptations and their functional traits reflect to some extent the constraints of the environments where the plants typically grow. Pdf morphology and development of leaf papillae in. Pdf leaf morphological and anatomical characteristics of. Leaf organization a leaf is organized to collect sunlight. The shape, margin, apex, surface and extent of incision of lamina varies in different leaves. Morphology and development of leaf papillae in sematophyllaceae article pdf available in the bryologist march 2010 with 431 reads how we measure reads. The following is a defined list of terms which are used to describe leaf morphology in the description and taxonomy of plants. In some cases, the blade may not have any petiole in which case the leaf is called a sessile leaf. Veins provide rigidity to the leaf blade and act as channels of transport for water, minerals and food materials. Leaves can be arranged around the stem in three ways.

There is, usually, a middle prominent vein, which is known as the midrib. Leaf morphological and anatomical characteristics of heteroblastic eucalyptus globulus ssp. Introduction to weed science and weed identification. The compound leaves are further subdivided into the following types of leaves.

A few plants have a spreading vein pattern called dichotomous venation. In a compound leaf, the midrib of the leaf is branched into different leaflets and is connected by a single petiole. Leaf flag leaf the upper most leaf of a grass often sticks out perpendicular to the stem and is called the flag leaf flag leaf leaf sheath tubular, lower part of leaf. The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines.