BioStor
 | An Analysis of the Flora of Southern Africa: Its Characteristics, Relationships, and Orgins Peter Goldblati (1978) Annals of the Missouri Botanical Garden 65: 369-436 |
 | A new section and two new species of Tragia (Euphorbiaceae) from the Venezuelan Guayana and French Guiana L J Gillespie (1994) Novon 4: 330-338 |
 | Synopsis of the Genera and Suprageneric Taxa of Euphorbiaceae Grady L Webster (1994) Annals of the Missouri Botanical Garden 81: 33-144 |
 | Pollen Morphology and Phylogeny of the Tribe Plukenetieae (Euphorbiaceae) Lynn J Gillespie (1994) Annals of the Missouri Botanical Garden 81: 317-348 |