Eschscholtz, esh'sholts, Johann, (1793-1834), a German naturalist. He was born at Dorpat, and, though he traveled widely, he died there. He was professor of anatomy in the university of his native town. As a physician and naturalist Eschscholtz accompanied the Russian navigator, Kotzebue, in exploring expeditions in the Pacific, 1815-18 and 1823-26. Eschscholtz Bay on the coast of Alaska was named for him. The California state flower, the delicate, yellow-flowered Eschscholtzia, bears his name. Eschscholtz published several volumes, including a Zoological Atlas and a System of Acalephae, the latter being a work on jelly fishes and allied forms.