BioStor
 | A Systematic Account of the Alligator Lizards (Gerrhonotus) in the Western United States and Lower California H S Fitch (1938) American Midland Naturalist : 381-424 |
 | The genera of Tiliaceae and Elaeocarpaceae in the southeastern United States G K Brizicky (1965) Journal of the Arnold Arboretum 46: 286-307 |
 | Composition, Origin, and Affinities of the Madagascan Vascular Flora Jean-F Leroy (1978) Annals of the Missouri Botanical Garden 65: 535-589 |
 | Studies of Angiosperm Phylogeny using Protein Sequences P G Martin and J M Dowd (1991) Annals of the Missouri Botanical Garden 78: 296-337 |