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An illustration of white clover (left) and red clover (right). Clover (Trifolium), or trefoil, is a genus of about 300 species of plants in the pea family Fabaceae. The genus has a cosmopolitan distribution; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes on mountains in the tropics. They are small annual, biennial, or short-lived perennial herbaceous plants. The leaves are trifoliate (rarely 5- or 7-foliate), with stipules adnate to the leaf-stalk, and heads or dense spikes of small red, purple, white, or yellow flowers; the small, few-seeded pods are enclosed in the calyx

Clover

An illustration of white clover (left) and red clover (right). Clover (Trifolium), or trefoil, is a…

"The crown of William I and his successors was a plain circlet heightened with four spikes having trefoil heads." — Encyclopedia Britannica, 1893

Crown

"The crown of William I and his successors was a plain circlet heightened with four spikes having trefoil…

"Henry I enriched the plain circlet with gems, and on his great seal the trefoils of his fathers crown assume a form resembling that of fleurs-de-lys." — Encyclopedia Britannica, 1893

Crown

"Henry I enriched the plain circlet with gems, and on his great seal the trefoils of his fathers crown…

"The effigies of Henry II, Richard I, John, and their queens, show the crown to have made such an advance in the dignity of its aspect." — Encyclopedia Britannica, 1893

Crown

"The effigies of Henry II, Richard I, John, and their queens, show the crown to have made such an advance…

"The crown of Henry III has a plain circlet heightened with trefoils, a slightly raised point intervening between each pair of the leaves." — Encyclopedia Britannica, 1893

Crown

"The crown of Henry III has a plain circlet heightened with trefoils, a slightly raised point intervening…

"The truly beautiful crown of Edward II as it is represented in his effigy, was formed of four large and as many smaller leaves of a deeply serrated type, rising with graceful curves from the jewelled circlet, and haing eight small flowers alternating with the leaves." — Encyclopedia Britannica, 1893

Crown

"The truly beautiful crown of Edward II as it is represented in his effigy, was formed of four large…

"It would seem from the crown, sculptured with elaborate care upon the head of his effigy at Canterbury, that Henry IV determined to distinguish the accession of a Lancastrian prince by displaying an unprecedented magnificence in the emblem of his sovereignty. The splendidly jewelled circlet of this crown is heightened with eight large and rich leaves, and as many true fleurs-de-lys." — Encyclopedia Britannica, 1893

Crown

"It would seem from the crown, sculptured with elaborate care upon the head of his effigy at Canterbury,…

"The arched crown in its earliest form was introduced by Henry V.; and, with the arches crosses, which from the time of Henry VI always have been crosses patees, appeared to supersede the earlier foliage upon the circlet." — Encyclopedia Britannica, 1893

Crown

"The arched crown in its earliest form was introduced by Henry V.; and, with the arches crosses, which…

"A temple built about 1000 A.D. It is unique because of its Gothic gablets and trefoil arches." — Encyclopedia Britanica, 1893

Temple, Pandrethan

"A temple built about 1000 A.D. It is unique because of its Gothic gablets and trefoil arches." —…

The trefoil tracery panel is a Gothic design.

Trefoil Tracery Panel

The trefoil tracery panel is a Gothic design.