Vegetative Morphology 2

Needle-shaped

Of the shape of the stylized heart, with the petiole attached between the basal lobes

Of the shape of an equilateral triangle

Oval, the ends rounded and widest at the middle

Sickle-shaped

Thread-like

More or less arrowhead-shaped, but with the basal loves divergent

Lance-shaped, several times longer than wide; the sides curved, with the blade broadest below the middle

Several times longer than wide, the sides more or less parallel

With a series of pinnate lobes and a larger terminal lobe

As in the cordate leaf, but the petiole attached at the point of the heart

As in the lanceolate leaf, but the petiole attached at the narrow end

About two or three times longer than broad; rectangular with rounded corners

As in ovate, but the petiole attached at the narrow end

Circular or nearly so

Broadly elliptic, the length less than twice the width

The shape of the longitudinal section through a chicken's egg, with the petiole attached at the broad end

Kidney-shaped or bean-shaped

Coarsely-toothed, the teeth pointing toward the base of the leaf, as in the dandelion

Arrowheaded-shaped

Spoon-shaped

Slender and tapering to a point, as in the awl, a tool used to make holes in leather

With fine hairs on the margin

Scalloped, the teeth blunt

With coarse angular teeth directed outward at right angles to the margin

Finely dentate

With the serrations themselves serrate

Not in any way indented, the margin featureless

Gnawed, as if chewed upon

Fringed, the hairs coarser than in ciliate

Deeply and sharply cut

Slashed into narrow pointed segments

The margin rolled toward the lower side of the blade

With coarse saw-like teeth which point forward

Finely serrate

Wavy in and out, in the plane of the blade

Wavy perpendicular to the plane of the blade

Several to many veins of about the same size (the midrib sometimes more conspicuous) and parallel to one another, as in many monocots

Prominent midvein with a series of major veins arising at about 30-45º angles along its length

A complex venation pattern of major and minor veins which form a network or reticulum

The major veins radiating from a common point at the base of the blade, as in the maples

An uncommon pattern in which the major veins curve gently upward

Apex formed by two straight margins meeting at less than 90º

An acute apex whose sides are concave and taper to an extended point

Terminating in a short, sharp, flexible point

An abrupt, hard, bristle-like point (awn)

The apex drawn out into a long gradual taper

The apex tail-like

A sharp-pointed tip formed by abruptly and sharply concave sides

With a shallow notch at the apex

With a hard, short, abrupt point (mucro)

Apex formed by two lines which meet at more than a right angle

The apex gently curved

With a spine at the tip

The apex appearing chopped off

With a pair of rounded lobes which somewhat resemble the human ear

The bases partly to completely surrounding the stem

Wedge-shaped

Asymmetrical; unequal-sided

The condition of a sessile leaf when the base completely encircles the stem