Rayonnnant Gothic balustrade.

Balustrade

Rayonnnant Gothic balustrade.

Flamboyant French Gothic balustrade at Chateau of Josselyn.

Balustrade

Flamboyant French Gothic balustrade at Chateau of Josselyn.

"Cusp, in architecture, is the point formed by the meeting of two small arches, or foils, in foil arches, or tracery. Cusps often terminate in rich bosses of flowers and leaves." — Chambers' Encyclopedia, 1875

Cusp

"Cusp, in architecture, is the point formed by the meeting of two small arches, or foils, in foil arches,…

Soffit cusps.

Cusps

Soffit cusps.

Chamfer cusps.

Cusps

Chamfer cusps.

Filleted cusps.

Cusps

Filleted cusps.

Decorative gable over a window, Cologne.

Gable

Decorative gable over a window, Cologne.

A leaf with four leaflets, as sometimes that of a clover.

Quatrefoil

A leaf with four leaflets, as sometimes that of a clover.

A leaf with four leaflets, as sometimes that of a clover.

Quatrefoil

A leaf with four leaflets, as sometimes that of a clover.

A leaf with four leaflets, as sometimes that of a clover.

Quatrefoil

A leaf with four leaflets, as sometimes that of a clover.

Architecture of Cathredals in England. Geometrical tracery at Ripon Cathedral.

Tracery

Architecture of Cathredals in England. Geometrical tracery at Ripon Cathedral.

Architecture of Cathredals in England. French flamboyant tracery at Rouen Cathedral.

Tracery

Architecture of Cathredals in England. French flamboyant tracery at Rouen Cathedral.

Architecture of Cathredals in England. Flowing tracery at Wells Cathedral, Decorated Style.

Tracery

Architecture of Cathredals in England. Flowing tracery at Wells Cathedral, Decorated Style.

"Tracery of later date." —D'Anvers, 1895

Tracery

"Tracery of later date." —D'Anvers, 1895

The tracery on the windows of La Sainte-Chapelle, in Paris, France shows foliations: a leaf pattern common in Gothic architecture. "Foliations in Tracery. Sainte Chapelle, Paris, A. D. 1240." -Whitney, 1911

Tracery Foliations

The tracery on the windows of La Sainte-Chapelle, in Paris, France shows foliations: a leaf pattern…

"Flamboyant Tracery, Rouen Cathedral, Normandy" showing the intersecting ribs of tracery in windows of Gothic architecture. -Whitney, 1911

Tracery of Rouen Cathedral

"Flamboyant Tracery, Rouen Cathedral, Normandy" showing the intersecting ribs of tracery in windows…

Detail from the transept of Notre Dame, Paris.

Transept Carving

Detail from the transept of Notre Dame, Paris.