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This is an example of a needle-shaped leaf of the Larch.

Needle Leaf

This is an example of a needle-shaped leaf of the Larch.

"When a leaf is bounded by a regular curve, and it three or more times as long as it is broad, it is called oval or oblong."—Darby, 1855

Oblong Leaf

"When a leaf is bounded by a regular curve, and it three or more times as long as it is broad, it is…

A nearly circular leaf.

Orbicular Leaf

A nearly circular leaf.

"It is said to be ovate when it has the outline of the longitudinal section of an egg."—Darby, 1855

Ovate Leaf

"It is said to be ovate when it has the outline of the longitudinal section of an egg."—Darby,…

An ovate leaf is the shape of an egg. The broad end is downwards.

Ovate and Obtuse Leaf

An ovate leaf is the shape of an egg. The broad end is downwards.

The Overlap of Leaf is a Roman candelabrum design.

Overlap of Leaf

The Overlap of Leaf is a Roman candelabrum design.

When divided, the leaf resembles a hand.

Palmate Leaf

When divided, the leaf resembles a hand.

A palmatifid leaf is cut half way to the base in a palmate manner.

Palmatifid Leaf

A palmatifid leaf is cut half way to the base in a palmate manner.

Pandurate leaves are fiddle shaped. The leaves arer obovate in form, with one or two deep recesses or indentations on each side.

Pandurate Leaf

Pandurate leaves are fiddle shaped. The leaves arer obovate in form, with one or two deep recesses or…

This type of parallel-veined leaf has veins running from the base of the leaf to the point.

Parallel-veined Leaf

This type of parallel-veined leaf has veins running from the base of the leaf to the point.

This type of parallel-veined leaf has veins running from the midrib of the leaf to the margins.

Parallel-veined Leaf

This type of parallel-veined leaf has veins running from the midrib of the leaf to the margins.

This is an example of a pinnately parted leaf.

Parted Leaf

This is an example of a pinnately parted leaf.

This is an example of a palmately parted leaf.

Parted Leaf

This is an example of a palmately parted leaf.

A leaf in the shape of a comb.

Pectinate Leaf

A leaf in the shape of a comb.

A leaf shaped like a foot.

Pedate Leaf

A leaf shaped like a foot.

"Peltate, with the petiole inserted in the lamina, but not in the center of it."—Darby, 1855

Peltate Leaf

"Peltate, with the petiole inserted in the lamina, but not in the center of it."—Darby, 1855

"Perfiolate leaf, caused by the union of two opposite leaves."—Darby, 1855

Perfiolate Leaf

"Perfiolate leaf, caused by the union of two opposite leaves."—Darby, 1855

"Perfiolate leaf, caused by the union of the lobes of the leaves."—Darby, 1855

Perfiolate Leaf

"Perfiolate leaf, caused by the union of the lobes of the leaves."—Darby, 1855

A feather-like leaf with multi-divided features.

Pinnate Leaf

A feather-like leaf with multi-divided features.

A leaf where the lobes go near to the middle.

Pinnatifid Leaf

A leaf where the lobes go near to the middle.

Here is a leaf of the pitcher plant. You see that it has an opening at the upper end. It can hold considerable water.

Pitcher Plant Leaf

Here is a leaf of the pitcher plant. You see that it has an opening at the upper end. It can hold considerable…

"Transverse section of a plicate or plaited leaf." — Encyclopedia Britanica, 1893

Plicate Leaf

"Transverse section of a plicate or plaited leaf." — Encyclopedia Britanica, 1893

"Vertical section of the leaf of Potamogeton or Pondweed, showing air cavities or lecunae l, and parenehymatous cells p, with granules." — Encyclopedia Britanica, 1893

Pondweed Leaf

"Vertical section of the leaf of Potamogeton or Pondweed, showing air cavities or lecunae l, and parenehymatous…

A kidney-shaped leaf.

Reniform Leaf

A kidney-shaped leaf.

"Reticulated leaves are those the veins of which branch and ramify in all directions, forming a complete network."—Darby, 1855

Reticulated Vein Leaf

"Reticulated leaves are those the veins of which branch and ramify in all directions, forming a complete…

"Transverse section of a revolute leaf." — Encyclopedia Britanica, 1893

Revolute Leaf

"Transverse section of a revolute leaf." — Encyclopedia Britanica, 1893

The Roman Leaf design is shown as a capital of a column in Pantheon, Rome. The spoon-like roundings of the points of the leaves, as well as the deep incisions are designed to look good from a distance.

Roman Leaf

The Roman Leaf design is shown as a capital of a column in Pantheon, Rome. The spoon-like roundings…

The Roman Capital Leaf has rounder and broader tips.

Roman Capital Leaf

The Roman Capital Leaf has rounder and broader tips.

The Romanesque Leaf design has more rounder and broader tips.

Romanesque Leaf

The Romanesque Leaf design has more rounder and broader tips.

This Romanesque leaf design was found in a monastery in St. Trophimus (Southern France).

Romanesque Leaf

This Romanesque leaf design was found in a monastery in St. Trophimus (Southern France).

The leaflets are often serrated and sheath at the base.

Rose Leaf

The leaflets are often serrated and sheath at the base.

"Ruccinate, when the divisions of a pinnatifid leaf are more or less triangular, and pointing downwards."—Darby, 1855

Ruccinate Leaf

"Ruccinate, when the divisions of a pinnatifid leaf are more or less triangular, and pointing downwards."—Darby,…

A leaf that resembles an arrow-head in shape.

Saggitate Leaf

A leaf that resembles an arrow-head in shape.

A leaf in the shape of an arrow-head.

Sagittate Leaf

A leaf in the shape of an arrow-head.

A leaf where the depressions are broad at the bottom.

Sinuate-Lobed Leaf

A leaf where the depressions are broad at the bottom.

A leaf which is broad at the apex, and gradually tapering into the petiole.

Spathulate Leaf

A leaf which is broad at the apex, and gradually tapering into the petiole.

Style of Louis XVI Leaf.

Style of Louis XVI Leaf

Style of Louis XVI Leaf.

A leaf in the shape of an awl.

Subulate Leaf

A leaf in the shape of an awl.

Leaf of the Swanley common to London.

Swanley Leaf

Leaf of the Swanley common to London.

A leaf with three leaflets.

Ternate Leaf

A leaf with three leaflets.

A leaf with triple the amount of feather-like leaves.

Tripinnate Leaf

A leaf with triple the amount of feather-like leaves.

Here is a leaf of the Venus's fly trap which is a spring trap for flies and other insects. Here you see the leaf as it is spread out, wide open.

Venus Fly Trap Leaf

Here is a leaf of the Venus's fly trap which is a spring trap for flies and other insects. Here you…

Here is a leaf of the Venus's fly trap which is a spring trap for flies and other insects. The two parts of the leaf close together and the points on the edges are locked together.

Venus Fly Trap Leaf

Here is a leaf of the Venus's fly trap which is a spring trap for flies and other insects. The two parts…

Leaf of the Vitis, a vining plant belonging to the Vitaceae family.

Vitis Leaf

Leaf of the Vitis, a vining plant belonging to the Vitaceae family.

This is an example of a whorled-shaped leaf structure.

Whorled Leaf

This is an example of a whorled-shaped leaf structure.

Leaflets usually 3, very prominently toothed.

Leaflets

Leaflets usually 3, very prominently toothed.

Leaflets usually more than 3; not prominently toothed.

Leaflets

Leaflets usually more than 3; not prominently toothed.

This shows a typical leaf.

Leaves

This shows a typical leaf.

Stems weakly arching; leaves lanceolate; flowers showy purplish.

Leaves

Stems weakly arching; leaves lanceolate; flowers showy purplish.

Leaves remotely toothed, acumnate at apex; flowers appearing before the leaves.

Leaves

Leaves remotely toothed, acumnate at apex; flowers appearing before the leaves.

A clump of leaves in the grass.

Leaves

A clump of leaves in the grass.

This illustration shows leaves derived from the oval type: 13. Ovate and Serrate; 14. Palmately three cleft.

Leaves Derived from the Oval Type

This illustration shows leaves derived from the oval type: 13. Ovate and Serrate; 14. Palmately three…

Compound Leaves

Compound Leaves

Compound Leaves

A leaf in which the lower lobes are uniteed, either above the stem is sessile or above the petiole if petiolate.

Connate Leaves

A leaf in which the lower lobes are uniteed, either above the stem is sessile or above the petiole if…

Decorative leaves.

Decorative Leaves

Decorative leaves.

Four leaves.

Four Leaves

Four leaves.

"Parallel-veined leaves are those in which the veins proceed from their origin to their termination without any subdivision; the veins being connected by minute, parallel, straight veinlets, passing perpendicularly from one to another."—Darby, 1855

Parallel-Veined Leaves

"Parallel-veined leaves are those in which the veins proceed from their origin to their termination…

Six leaves.

Six Leaves

Six leaves.

Two leaves.

Two Leaves

Two leaves.

Pictured is a leaf with a male on it, slightly enlarge (a) and a male flying, much enlarged (b). Lecanium persicae is known as the peach scale insect. It lives on the branches of peach and plum trees.

Lecanium Persicae

Pictured is a leaf with a male on it, slightly enlarge (a) and a male flying, much enlarged (b). Lecanium…