CMI; Index Herbariorum, ed. 8. Biogr. details incl. portr. & bibliogr. up to 2008 in Anales Jard. Bot. Madrid, 66(S1): 7-24 (2009); see tribute in https://rjb.csic.es/fallece-el-ex-director-del-real-jardin-botanico-y-profesor-emerito-francisco-de-diego-calonge/