Today, Thornton's large-format plates with their stunning floral portraits number among supreme achievements of botanical illustration. Thornton engaged the most renowned flower painters of his age and spared no cost in the creation of this unique work. His reckless enthusiasm, however, reduced his originally considerable fortune so drastically that, sanctioned by Parliament, Thornton had to organize a botanical lottery in order to bring his spectacular project to a provisional end. Surviving complete editions of the Temple number today among the great treasures of only a few libraries; meanwhile, the individual plates have become sought-after and extremely expensive collectors' items, whose particular allure lies in their unusual combination of monumental, at times exotic plants with highly romantic background landscapes. More than any other floral painting, the bewitchingly illuminated blossoms of the Night-Blooming Cereus, posed before darkening ruins, expresses the late 18th-century sentiment that in the following decades found its characteristic expression in European Romantic literature and painting.