Crocket from St. Urbain, Troyes.

Crocket

Crocket from St. Urbain, Troyes.

Early English capital from Lincoln Cathedral.

Capital

Early English capital from Lincoln Cathedral.

Decorated English capital from Beverley Cathedral.

Capital

Decorated English capital from Beverley Cathedral.

Cresting ornament from Arundel Church in the Perpendicular style.

Cresting

Cresting ornament from Arundel Church in the Perpendicular style.

Decorated finial.

Finial

Decorated finial.

Decorated crocket.

Crocket

Decorated crocket.

Decorated English capital from Beverley Cathedral.

Capital

Decorated English capital from Beverley Cathedral.

Natural form of the acanthus leaf.

Acanthus Leaf

Natural form of the acanthus leaf.

Acanthus leaf artistically modified.

Acanthus Leaf

Acanthus leaf artistically modified.

Stem of a potato plant.

Stem

Stem of a potato plant.

A leaf-cutting of begonia, well started.

Leaf-cutting of a begonia

A leaf-cutting of begonia, well started.

Cross section of a leaf, showing the breathing pores and intercellular spaces. The small dots are grains of chlorophyll.

Cross-section of a leaf

Cross section of a leaf, showing the breathing pores and intercellular spaces. The small dots are grains…

Illustration of a leaf blade, ligule, and a sheath of grass.

Grass morphology

Illustration of a leaf blade, ligule, and a sheath of grass.

Illustration of leaf arrangements of grass.

Grass morphology:leaf arangement

Illustration of leaf arrangements of grass.

Diagram illustration showing stem, leaf blade, and leaf sheath

Sedge morphology

Diagram illustration showing stem, leaf blade, and leaf sheath

Diagram illustration showing leaf arrangement.

Sedge morphology:leaf arrangement

Diagram illustration showing leaf arrangement.

A clump of leaves in the grass.

Leaves

A clump of leaves in the grass.

Tapering at the end.

Acuminate

Tapering at the end.

Terminating with a sharp point.

Acute

Terminating with a sharp point.

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

Alternate

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

The pollen-bearing portion of a stamen.

Anther

The pollen-bearing portion of a stamen.

Slenderly tapering; long drawn-out.

Attenuate

Slenderly tapering; long drawn-out.

A bristle-like appendage.

Awn

A bristle-like appendage.

The angle formed by a leaf with the stem.

Axil

The angle formed by a leaf with the stem.

Lenticular

Biconvex

Lenticular

Bearing two teeth at the tip.

Bidentate

Bearing two teeth at the tip.

The expanded portion of a leaf.

Blade

The expanded portion of a leaf.

A modified leaf usually subtending a flower or flowers.

Bract

A modified leaf usually subtending a flower or flowers.

The outermost circle of flower parts; made up of sepals.

Calyx

The outermost circle of flower parts; made up of sepals.

With a cellular-like surface.

Cancellate

With a cellular-like surface.

A simple pistil or one of the parts of a compoud pistil.

Carpel

A simple pistil or one of the parts of a compoud pistil.

Minutely ciliate.

Cilliate

Minutely ciliate.

The contracted stalk-like base of a petal.

Claw

The contracted stalk-like base of a petal.

Composed of two or more similar parts united to form one whole; for instance, a leaf.

Compound

Composed of two or more similar parts united to form one whole; for instance, a leaf.

Heart-shaped with the tip forward.

Cordate

Heart-shaped with the tip forward.

A hard, bulb-like base of a stem.

Corm

A hard, bulb-like base of a stem.

The inner circle of flower parts: made up of petals which are often colored and showy.

Corolla

The inner circle of flower parts: made up of petals which are often colored and showy.

Tubular structure formed by united petals.

Corolla-Tube

Tubular structure formed by united petals.

A type of flower cluster with a flat top.

Corymb

A type of flower cluster with a flat top.

Wedge-shaped.

Cuneate

Wedge-shaped.

Extending or running down on another structure, as a leaf on a stem or a tubercle on an achene.

Decurrent

Extending or running down on another structure, as a leaf on a stem or a tubercle on an achene.

Shaped like an equalateral triangle or the Greek letter delta.

Deltoid

Shaped like an equalateral triangle or the Greek letter delta.

forking regularly by twos.

Dichotomous

forking regularly by twos.

Cut into numerous very fine segements or divisions.

Dissected

Cut into numerous very fine segements or divisions.

Coming off in two ranks.

Distichous

Coming off in two ranks.

Diverging at a wide angle.

Divaricate

Diverging at a wide angle.

Pertains to shape.

Elliptic

Pertains to shape.

Rooted to substratum; erect and extending upward out of water.

Emergent

Rooted to substratum; erect and extending upward out of water.

Pertaining to leaves; comming off in two ranks, making the base appear flattened.

Equitant

Pertaining to leaves; comming off in two ranks, making the base appear flattened.

Appearing as if gnawed.

Erose

Appearing as if gnawed.

A cluster or bundle.

Fascicle

A cluster or bundle.

The part of the stamen which supports the anther.

Filament

The part of the stamen which supports the anther.

Like a thread; long, slender, and round.

Filiform

Like a thread; long, slender, and round.

Alternately bent or twisted in different directions.

Flexuous

Alternately bent or twisted in different directions.

Spindle shaped.

Fusiform

Spindle shaped.

Swollen on one side.

Gibbous

Swollen on one side.

Shperical.

Globose

Shperical.

Like sagittate but with lobes diverging.

Hastate

Like sagittate but with lobes diverging.

A dense cluster of sessile or almost sessile flowers borne on a very short axis.

Head

A dense cluster of sessile or almost sessile flowers borne on a very short axis.

Portion of the united calyx investing the fruit.

Hypanthium

Portion of the united calyx investing the fruit.