A person ignorant of Botany, on beholding the profusion of flowers which adorn the face of nature, would discover general resemblances, and form in his mind some order of arrangement; but the Botanist learns to distinguish the least conspicuous parts of a plant as most important in a system of classification.

Familiar Lectures on Botany, Practical, Elementary and Physiological, Introduction (p. 10), FJ. Huntington & Co. 1853