Requested: Different Types of Leaf Shapes

HSB/Inte Science | January 30, 2013 | Comments 0

LEAF SHAPES

 

There are many different leaf shapes in nature.

What follows in this tutorial are the most common leaf shapes.

Ovate leaf shape

Ovate leaf shape

Ovate

An Ovate leaf is described as being broadest below the middle, and roughly 2x as long as it is wide.

A way to remember this leaf is that it is “egg-shaped.

Obovate-leaf-shapes
Obovate

An Obovate leaf is the reverse of Ovate.

 

Lanceolate Leaf shapes

Lanceolate Leaf shapes

Lanceolate

A Lanceolate leaf is at least 3x longer than wide, and broadest below middle.

oblanceolate-leaf-shapes

oblanceolate-leaf-shapes

 

Oblanceolate

Oblanceolate leaves are at least 3x longer than wide, but broadest above middle.

An Oblanceolate leaf is the reverse of a Lanceolate leaf.

 

cordate-leaf-shapes

cordate-leaf-shapes

Cordate

Leaves that are Cordate-shaped have leaves that are broad to the point and then turn upwards at the base, forming a notch.
Cordate leaves are “heart-shaped.”

 

 

obcordate-leaf-shapes

obcordate-leaf-shapes

Obcordate

Obcordate leaves are the reverse of Cordate leaves. They start at a point and then widen until they form a notch at the apex.

elliptical-leaf-shapes

elliptical-leaf-shapes

Elliptical

Elliptical leaves have the broadest width in the middle and then taper off at the ends.Another way to remember this leaf shape is to think of it as “football-shaped.”

 

oblong-leaf-shapes

oblong-leaf-shapes

Oblong

Oblong leaves are 2-3x as long as wide and have parallel sides.

 

cuneate-leaf-shapes

cuneate-leaf-shapes

Cuneate

Cuneate leaves have a small width at base, but then a broad width near the top before the apex.
Cuneate leaves are “wedge-shaped.”

linear-leaf-shapes

linear-leaf-shapes

Linear

Linear leaves are narrow, are at least 4x longer than wide, and have the same width throughout.

peltate-leaf-shapes

peltate-leaf-shapes

Peltate

Peltate leaves are rounded with the petiole attached underneath the base of the leaf.
Peltate leaves are shaped like little shields.

spatulate leaf shape

spatulate leaf shape

Spatulate

Spatulate leaves are narrow for almost the entire leaf, but then have an abrupt round structure at the apex.
Spatulate leaves have a similar shape to a spatula.

Reniform-leaf-shape

Reniform-leaf-shape

Reniform

Reniform leaves are broad and wider than they are high.
Peltate leaves are shaped like kidneys.

 

Hastate-leaf-shape

Hastate-leaf-shape

Hastate

Hastate leaves are very recognizable. They are taper off at three apexes and are arrowhead-shaped.

Source

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