Following Castillejo's death, his academic position was filled by another of his students, Francisco Arjona, who continued Castillejo's studies of the flora of the Cádiz region.[5]
^Cabrera Afonso, JR; Márquez Espinós, C; Fuentes Ximénez, JL (1988). "El Lorquino Domingo Castillejos y su produccion cientifica en el Real Colegio de Cirgia de Cadiz". In Valera, M; Egea, A; Blazquez, D (eds.). Actas del VIII Congreso Nacional de Historia de la Medicina (Murcia-Cartagena, 18-21 de diciembre de 1986) (in Spanish). Universidad de Murcia, Dpto. Historia de la Medicina. pp. 680–689 (vol. ii). Archived from the original on 2016-03-03. Retrieved 2014-11-04. (pp. 48–57 of PDF)
^Erroneous vital dates are often associated with Castillejo, perhaps following Edmund Jaeger. A Source-book of biological names and terms. third edition. 1955. page 309, where the author states that the genus Castilleia is named for "Castillio, Juan (1744-1793)" apparently confusing Castillejo with Juan Diego del Castillo