Descriptions of New Species and Genera of Plants in the Natural Order of the Compositae, Collected in a Tour across the Continent to the Pacific, a Residence in Oregon, and a Visit to the Sandwich Islands and Upper California, during the Years 1834 and 1835

Thomas Nuttall, Descriptions of New Species and Genera of Plants in the Natural Order of the Compositæ, Collected in a Tour across the Continent to the Pacific, a Residence in Oregon, and a Visit to the Sandwich Islands and Upper California, during the Years 1834 and 1835, Transactions of the American Philosophical Society, Vol. 7 (1841), pp. 283-453