Juan Diego del Castillo was a Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 pharmacist and botanist who joined Vicente Cervantes

Vicente Cervantes

Vicente de Cervantes was a notable Spanish and Mexican physician and botanist.-Background:Don Vicente Cervantes was a contemporary of Martín Sessé y Lacasta and corresponded with Jean-Louis Berlandier, the French naturalist who botanized in Mexico and Texas as part of the Mexican Boundary...

 in Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

. Castillo wrote Plantas descritas en el viaje de Acapulco. He died in Mexico. Castillo had been a contemporary of Martín Sessé y Lacasta

Martín Sessé y Lacasta

Martín Sessé y Lacasta was a Spanish botanist, who relocated to New Spain during the 18th century to study and classify the flora of the territory.-Background:...

. In New Spain

New Spain

New Spain, formally called the Viceroyalty of New Spain , was a viceroyalty of the Spanish colonial empire, comprising primarily territories in what was known then as 'América Septentrional' or North America. Its capital was Mexico City, formerly Tenochtitlan, capital of the Aztec Empire...

, Lacasta had been joined by a group of Spanish botanists selected by Casimiro Gómez Ortega

Casimiro Gómez Ortega

Casimiro Gómez de Ortega was a Spanish physician, and botanist who was the First Professor of the Royal Botanical Garden of Madrid...

, director of the Royal Botanical Garden of Madrid. These included Cervantes, José Longinos Martínez

José Longinos Martínez

José Longinos Martínez was a Spanish naturalist whose account of his travels through Baja California Sur, Baja California, and California in 1792 provided an important early account of the region, its fauna, flora, minerals, and native inhabitants....

, and Del Castillo.

Del Castillo left a large sum of money towards the printing of their projected book Flora Mexicana. Cervantes named the genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 Castilla

Castilla (plant)

Castilla is a tree genus belonging to the family Moraceae found native in Central America. It is named after Juan Diego del Castillo Castilla (sometimes incorrectly spelled Castilloa) is a tree genus belonging to the family Moraceae found native in Central America. It is named after Juan Diego...

after him.