Names and types relating to the South American genus Lamanonia (Cunoniaceae) and its synonyms, the identity of L. speciosa, and an account of the little-known L. ulei

Publication details for names that refer to the South American genus Lamanonia and its synonyms, Belangera and Polystemon, are reviewed, including names published by Vellozo, Cambessèdes, David Don, Pampanini and Engler, amongst others. The types of these names, collected by Saint-Hilaire, Glaziou, Sellow and others, are also reviewed and lectotypes designated where appropriate. A specimen of the handwriting of David Don is provided. The types of L. grandistipularis and L. speciosa are clearly conspecific and so L. speciosa is removed from the synonymy of L. ternata and now takes priority over the name L. grandistipularis for a shrub or small tree from campo rupestre in Minas Gerais and Bahia in Brazil; this species has sharply toothed, coriaceous leaves and large stipules that are usually persistent on fertile stems. A description, illustration and distribution map are provided for L. ulei, which has largely been overlooked as an accepted species, but which is distinguished from all other species in the genus by a distinctive layer of dense greyish or fawn indumentum formed of small hairs on the abaxial surface of the leaflets.