Didymandra dentata  Spreng.
Sleumer (1980) states "the descriptor is too short making it impossible to place within the family."
Lacistema oblongum  Spreng.
Sleumer (1980) states "the descriptor for this species is ambiguous making this species difficult to place within the family. The holotype at Berlin Herbarium was destroyed."
Lacistema nana / Lacistema nana J.F. Macbr.: believed to be a typographical error of L. nena located on NY herbarium specimen reference NY00501407. Have not seen the specimen image to confirm; Lacistema pubescens serrulatum / Lacistema pubescens serrulatum Torr. 1985 not located yet Lacistema sericiflora / Lacistema sericiflora A.DC. name refers to a specimen located at G (according to www.tropicos.org) more information to follow Lacistema pubescens longistipulatum G. Agostini Information to follow.
References
Sleumer H O (1980) Flora Neotropica: Monograph Number 22 Flacourtiaceae, The New York Botanical Garden, New York: 182-206
The International Plant Names Index (2008). Listing of all plant names that appear in the Gray Card Index, Index Kewensis and the Australian Plant Name Index.