Wednesday 27 November 2013

LEAF

This blog is about leaf information.















Closely related plants have the same kind of leaves because they have all descended from a common ancestor.  

 







Mulberries grow on a deciduous tree that can reach 30 to 80 feet in height.




Leaves come in a variety of shapes, sizes, color, and textures. Leaves can be grouped as simple with one blade or compound with many leaflets. The edges of leaves can be smooth, have jagged edges referred to as toothed or scalloped edges referred to as lobed edges. Leaves can also be divided into how their veins are arranged. The leaves of plants referred to as monocots have leaves that run parallel to each other off one central vein.

 Those that are referred to as dicots have leaves with veins that branch out two different ways.Pinnate have one main vein called the midrib, and smaller branching veins. Palmates have several large veins branching from the leaf base into the blade.
Some leaves have special features such as spines and bud scales to protect them. Some are climbing (tendrils).

 Others catch insects. Some store water. These are called succulents or store food such as bulb scales.

Leaves contain other substances besides chlorophyll that give the leaf color. These substances are called pigments and cause leaves to turn colors in autumn. These leaves are on deciduous trees and fall off and die.

 New ones grow back in the spring. Conifers or trees that bear cones can keep their needles for years and grow new ones as soon as they lose them.

The small, pale yellow larvae (up to 5mm) travel up and down in leaf blades, leaving long mines which become progressively wider as the larvae grow.   This damage remains until the leaf dies.  Pupation occurs in the larval tunnel, with the pupa appearing like a small, tan rice grain (3-4mm) under the surface, often near the leaf base.  The adult fly (3-4mm) is small, black, and rather stocky with broad triangular clear wings.  Adults are often seen on daylily flowers.  

There may be one to several generations per season, depending on your growing region.  The species might overwinter as pupae in crowns or dead leaves.  No effective chemical control  methods have been formally tested yet.  

Mango leaves are alternately arranged, lanceolate (long and narrow) shaped , 6 to 16 inches in length, and leathery in texture.

The leaves are pinkish, amber, or pale green-colored when young and become dark green at maturity.

 






We will update soon... with some more leaf's....

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