BioStor
 | XXIII.—A List of Flowering Plants found growing wild in Western Norfolk George Munfordm (1841) Annals And Magazine of Natural History 8: 171-191 |
 | On the Penaeidae C S Bate (1881) Annals and Magazine of Natural History 8: 169-196 |
 | Taxonomic overview of Stemodia (Scrophulariaceae) for North America and the West Indies C C Cowan and B L Turner (1993) Phytologia 74: 61-103 |
 | Taxonomic overview of Stemodia (Scrophulariaceae) for South America C C Cowan and B L Turner (1993) Phytologia 75: 281-324 |