BioStor
 | Ruptiliocarpon (Lepidobotryaceae): a new arborescent genus and tropical American link to Africa, with a reconsideration of the family B E Hammel and N A Zamora (1993) Novon 3: 408-417 |
 | Synopsis of the Genera and Suprageneric Taxa of Euphorbiaceae Grady L Webster (1994) Annals of the Missouri Botanical Garden 81: 33-144 |
 | Systematic Anatomy of Euphorbiaceae Subfamily Oldfieldioideae I. Overview W John Hayden (1994) Annals of the Missouri Botanical Garden 81: 180-202 |