Gomez Ortega, Instruccion sobre el modo mas seguro y economico de transportar plantas vivas (Madrid, 1779)

The printed manual by which the Spanish crown tried to keep a living plant alive across an ocean. Written by the first professor of the Madrid botanical garden and sent out with a royal circular to the officers of the American dominions, it specifies the cases, the seed handling, a want list of American plants under the names used in America, and how to dry a plant for a herbarium - and states in its own words that the aim is to make Spain owner of the vegetable riches of Spanish America.