BioStor
 | XLI.—A Catalogue of Sicilian Plants; with some remarks on the Geography, Geology, and Vegetation of Sicily John Hogg (1842) Annals And Magazine of Natural History 10: 287-335 |
 | A synopsis of African species of Delphinium and Consolida P A Munz (1967) Journal of the Arnold Arboretum 48: 30-55 |